Update README

Added basic usage information.

TODO: Add advanced usage with `self.sprites` etc.

README.md

@@ -1,2 +1,89 @@
-# pysheeter
-Lightweight Python-script to create sprite sheets from PNGs
+# PySheeter
+Lightweight Pillow Python-script to create and scale sprite sheets from PNGs in folders or individually
+
+## Get started / Basic usage
+1. Download and install [Python 3](https://www.python.org/downloads/) for your architecture
+2. Download and install [Pillow](https://pypi.org/project/Pillow/) for Python 3 with `pip3`
+```bash
+$ pip3 install Pillow
+```
+### Sprite sheet from folder
+1. Import `Sheet` from `pysheeter`
+```python
+from pysheeter import Sheet
+```
+2. Initialize the class with a path to your PNG-folder
+```python
+spritesheet = pysheeter.Sheet("example/")
+```
+3. Create a sprite sheet with `put()`
+```python
+spritesheet.put("example_v1616.png",(16,16)) 
+# Creates a vertical spritesheet named 'example_v1616.png' with the dimensions 16x16px (scaled automatically)
+```
+
+__Example usage:__
+```python
+# from 'example.py'
+from pysheeter import PySheeter
+
+# Load sprites from 'example/'
+spritesheet = PySheeter.Sheet("example")
+
+# Create a vertical spritesheet with the dimensions 16x16
+spritesheet.put("example_v1616.png",(16,16))
+
+# Create a horizontal spritesheet with the dimensions 16x32
+spritesheet.put("example_h1632.png",(16,32),False)
+```
+![Example 1](https://storage.googleapis.com/public.victorwesterlund.com/github/VictorWesterlund/pysheeter/1example_v1616.png)
+![Example 2](https://storage.googleapis.com/public.victorwesterlund.com/github/VictorWesterlund/pysheeter/1example_h1632.png)
+### Sprite sheet from individual PNG-images
+1. Import `Sheet` from `pysheeter`
+```python
+from pysheeter import Sheet
+```
+2. Initialize the class without any arguments
+```python
+spritesheet = pysheeter.Sheet()
+```
+3. Add PNG-images with `add()`
+```python
+spritesheet.add("example/1.png")
+spritesheet.add("example/2.png")
+spritesheet.add("example/3.png")
+...
+```
+4. Remove PNG-images with `remove()`
+```python
+spritesheet.remove("example/2.png")
+```
+5. Create a sprite sheet with `put()`
+```python
+spritesheet.put("example_v1616.png",(16,16)) 
+# Creates a vertical spritesheet named 'example_v1616.png' with the dimensions 16x16px (scaled automatically)
+```
+
+__Example usage:__
+```python
+from pysheeter import PySheeter
+
+# Load sprites from 'example/'
+spritesheet = PySheeter.Sheet()
+
+# Add PNG-images
+spritesheet.add("example/1.png")
+spritesheet.add("example/2.png")
+spritesheet.add("example/3.png")
+spritesheet.add("example/7.png")
+spritesheet.add("example/5.png")
+spritesheet.add("example/9.png")
+
+# Create a vertical spritesheet with the dimensions 16x16
+spritesheet.put("example_v1616.png",(16,16))
+
+# Create a horizontal spritesheet with the dimensions 16x32
+spritesheet.put("example_h1632.png",(16,32),False)
+```
+![Example 1](https://storage.googleapis.com/public.victorwesterlund.com/github/VictorWesterlund/pysheeter/2example_v1616.png)
+![Example 2](https://storage.googleapis.com/public.victorwesterlund.com/github/VictorWesterlund/pysheeter/2example_h1632.png)