diff --git a/.gitignore b/.gitignore
index 82f1e02..044cfe4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,162 @@
+._*
+
+# Byte-compiled / optimized / DLL files
 __pycache__/
-example_*
\ No newline at end of file
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
\ No newline at end of file
diff --git a/__main__.py b/__main__.py
new file mode 100644
index 0000000..34e4061
--- /dev/null
+++ b/__main__.py
@@ -0,0 +1,23 @@
+from pysheeter.pysheeter import Sheet as SpriteSheet
+
+# Simple PySheeter CLI
+def main():
+    print("Welcome to the PySheeter CLI")
+
+    # Gather parameters from user input
+    folder = str(input("Enter path to folder of sprites:\n"))
+    ext = str(input("Enter the file extension of these sprites (without dot, 'png', 'jpg' etc.):\n"))
+    size = int(input("What width in pixels do you want each sprite to be? (1:1 aspect ratio):\n"))
+    vertical = not bool(input("Do you want a vertical sprite sheet? [Y,n]:\n"))
+    dest = str(input("Finally, enter a file name (or path) for the sprite sheet:\n"))
+
+    print("Reading sprites from folder...")
+    sheet = SpriteSheet(folder, ext)
+    
+    print("Creating sprite sheet...")
+    sheet.put(dest, (size, size), vertical)
+    
+    print("Done!")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/example/example.py b/example/example.py
deleted file mode 100644
index c22efcd..0000000
--- a/example/example.py
+++ /dev/null
@@ -1,10 +0,0 @@
-from pysheeter import PySheeter
-
-# Load sprites from './files/' (all sprites are 64x64)
-spritesheet = PySheeter.Sheet("files")
-
-# Create a vertical spritesheet with the dimensions 16x16 (scaled)
-spritesheet.put("example_v1616.png",(16,16))
-
-# Create a horizontal spritesheet with the dimensions 16x32 (scaled & stretched)
-spritesheet.put("example_h1632.png",(16,32),False)
\ No newline at end of file
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diff --git a/example/files/2.png b/example/files/2.png
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diff --git a/example/files/4.png b/example/files/4.png
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diff --git a/example/files/5.png b/example/files/5.png
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diff --git a/example/files/8.png b/example/files/8.png
deleted file mode 100644
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diff --git a/example/files/9.png b/example/files/9.png
deleted file mode 100644
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diff --git a/pysheeter/PySheeter.py b/pysheeter/PySheeter.py
deleted file mode 100644
index 9d3509a..0000000
--- a/pysheeter/PySheeter.py
+++ /dev/null
@@ -1,68 +0,0 @@
-import json
-from PIL import Image
-from pathlib import Path
-
-# Create new sprite
-class Sprite:
-
-	def __init__(self,image,size):
-		self.image = Image.open(image).convert("RGBA")
-
-		# Resize image to size[width,height] if nessesary
-		if(self.image.width != size[0] or self.image.height != size[1]):
-			self.resize(size)
-
-	# Resize image without maintaining aspect ratio
-	def resize(self,size,resample=Image.LANCZOS):
-		self.image = self.image.resize((size[0],size[1]),resample)
-
-# --------------------------------
-
-# Create new sheet of sprites
-class Sheet:
-
-	def __init__(self,folder = None):
-		self.sprites = []
-
-		# Auto-import sprite folder
-		if(folder):
-			self.path = Path(folder).glob("**/*.png")
-			self.sprites = [x for x in self.path]
-
-			print(f"Loaded {len(self.sprites)} sprites")
-
-	# Concatinate sprites vertically
-	def concatV(self,size):
-		sheet = Image.new("RGBA",(size[0],size[1] * len(self.sprites)))
-
-		for i, sprite in enumerate(self.sprites):
-			sheet.paste(Sprite(sprite,size).image,(0,size[1] * i))
-
-		return sheet
-
-	# Concatinate sprites horizontally
-	def concatH(self,size):
-		sheet = Image.new("RGBA",(size[0] * len(self.sprites),size[1]))
-
-		for i, sprite in enumerate(self.sprites):
-			sheet.paste(Sprite(sprite,size).image,(size[0] * i,0))
-
-		return sheet
-
-	# Add sprite by path
-	def add(self,path):
-		self.sprites.append(path)
-
-	# Remove sprite by path
-	def remove(self,path):
-		self.sprites.remove(path)
-
-	# Create and save spritesheet
-	def put(self,dest,size,vertical = True):
-		if(vertical):
-			sheet = self.concatV(size)
-		else:
-			sheet = self.concatH(size)
-
-		sheet.save(dest)
-		print(f"Saved spritesheet to '{dest}'")
\ No newline at end of file
diff --git a/pysheeter/__init__.py b/pysheeter/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/pysheeter/pysheeter.py b/pysheeter/pysheeter.py
new file mode 100644
index 0000000..a7629e5
--- /dev/null
+++ b/pysheeter/pysheeter.py
@@ -0,0 +1,66 @@
+from typing import Union
+from pathlib import Path
+
+from PIL import Image
+
+# Create new sprite
+class Sprite:
+	def __init__(self, image: str, resize: Union[tuple, list] = None):
+		self.image = Image.open(image).convert("RGBA")
+
+		# Resize image if necessary
+		if (resize):
+			self.resize(resize)
+
+	# Resize image without maintaining aspect ratio
+	def resize(self, size: Union[tuple, list], resample = Image.LANCZOS):
+		self.image = self.image.resize((size[0], size[1]), resample)
+
+# --------------------------------
+
+# Create new sheet of sprites
+class Sheet:
+	def __init__(self, folder: str = None):
+		self.sprites = []
+
+		# Auto-import PNGs from folder
+		if(folder):
+			self.path = Path(folder).glob(f"**/*.png")
+			self.sprites = [x for x in self.path]
+
+	# Concatinate sprites vertically
+	def concat_vertical(self, size: Union[tuple, list]):
+		sheet_size = (size[0], size[1] * len(self.sprites))
+		sheet = Image.new("RGBA", sheet_size)
+
+		for i, sprite in enumerate(self.sprites):
+			sheet.paste(Sprite(sprite, size).image, (0, size[1] * i))
+
+		return sheet
+
+	# Concatinate sprites horizontally
+	def concat_horizontal(self, size: Union[tuple, list]):
+		sheet_size = (size[0] * len(self.sprites), size[1])
+		sheet = Image.new("RGBA", sheet_size)
+
+		for i, sprite in enumerate(self.sprites):
+			sheet.paste(Sprite(sprite, size).image, (size[0] * i, 0))
+
+		return sheet
+
+	# Add sprite by path
+	def add(self, path: str):
+		self.sprites.append(path)
+
+	# Remove sprite by path
+	def remove(self, path: str):
+		self.sprites.remove(path)
+
+	# Create and save spritesheet
+	def put(self, dest: str, size: Union[tuple, list], vertical: bool = True):
+		if(vertical):
+			sheet = self.concat_vertical(size)
+		else:
+			sheet = self.concat_horizontal(size)
+
+		sheet.save(dest)
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..122514b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+# The requirements in setup.py should also be updated when changing this
+pillow
\ No newline at end of file
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..d10ac34
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,13 @@
+from setuptools import setup, find_packages
+
+setup(
+    name = "pysheeter",
+    version = "2.0.0",
+    description = "Simple python library for creating sprite sheets from images",
+    author = "Victor Westerlund",
+    author_email = "victor.vesterlund@gmail.com",
+    url = "https://github.com/victorwesterlund/reflect-client-python",
+    packages = ["pysheeter"],
+    # The requirement.txt file should also be updated when changing this
+    install_requires = ["pillow"]
+)
\ No newline at end of file