Add build statuses

Author: Olav de Haas

README.md

@@ -1,3 +1,8 @@
-# hardware-interface
-The hardware interface of the MARCH IV. This includes EtherCAT master and uses the SOEM library.
+# Hardware Interface
+The hardware interface of the MARCH exoskeleton. This includes EtherCAT master and uses the SOEM library.
+
+| Branch | Build Status |
+| ------ |:------------:|
+| Master | [![Build Status](https://api.travis-ci.com/project-march/hardware-interface.svg?branch=master)](https://travis-ci.com/project-march/hardware-interface) |
+| Develop | [![Build Status](https://api.travis-ci.com/project-march/hardware-interface.svg?branch=develop)](https://travis-ci.com/project-march/hardware-interface) |