Add maven link to readme

Author: theScrabi

README.md

@@ -6,3 +6,11 @@ This is the system independent core of [NewPipe](https://github.com/TeamNewPipe/
 It can be used to create your own java based NewPipe client.
 
 A small example showing how to use the extractor can be found [here](https://github.com/TeamNewPipe/np-cli).
+
+## Usage
+Using this Extractor in your own projects is simple. We offer this extractor as maven repository, so if you use
+gradle you can simple include NewPipeExtractor to your project by adding this line to the dependencies:
+
+`compile 'com.github.TeamNewPipe:NewPipeExtractor:7ae274`
+
+A fill documentation is no yet there, but it will follow :) Stay tuned.