Switch badge repo to @rhempel's

Sorry for skipping that in the original PR.

Author: ddemidov

README.md

@@ -1,6 +1,6 @@
 # ev3dev-lang-python
 
-[![Build Status](https://travis-ci.org/ddemidov/ev3dev-lang-python-1.svg?branch=master)](https://travis-ci.org/ddemidov/ev3dev-lang-python-1)
+[![Build Status](https://travis-ci.org/rhempel/ev3dev-lang-python.svg?branch=master)](https://travis-ci.org/rhempel/ev3dev-lang-python)
 
 Pure python bindings for ev3dev