Created a documentation and updated the README

README.md

@@ -1,3 +1,31 @@
 # YaHue Lib
 
 Yet Another Philips Hue API Library for Python. This project only implements a subset of the API.
+
+## Getting Started
+
+Before you can use the API of your Hue Bridge, you have to create an API user for it.  
+See https://developers.meethue.com/develop/get-started-2/
+
+## Supported Features
+
+- 💡 Lights
+    - reachable
+    - on
+    - brightness
+    - hue
+    - saturation
+    - alert
+    - alert_long
+- 🏠 Groups (Zones and Rooms)
+    - any_on
+    - all_on
+    - brightness
+    - hue
+    - saturation
+    - alert
+    - alert_long
+
+## Documentation
+
+see [DOCUMENTATION.md](DOCUMENTATION.md)