Update README.md

README.md

-NewPipe Extractor
+NewPipe Extractor [![Build Status](https://travis-ci.org/TeamNewPipe/NewPipeExtractor.svg?branch=master)](https://travis-ci.org/TeamNewPipe/NewPipeExtractor)
 =================
 
+
 This is the system independent core of [NewPipe](https://github.com/TeamNewPipe/NewPipe).
 It can be used to create your own java based NewPipe client.
 
-A small exmaple showing how this extractor can be used can be found [here](https://github.com/TeamNewPipe/np-cli).
+A small example showing how to use the extractor can be found [here](https://github.com/TeamNewPipe/np-cli).