CI: Changing branch name for symbols in README.me (show on the top page of github)

Author: arummler

README.md

@@ -1,8 +1,8 @@
 eudaq 1
 =====
 
-[![Build Status](https://travis-ci.org/eudaq/eudaq.svg?branch=v1.6-dev)](https://travis-ci.org/eudaq/eudaq) 
-[![Build status](https://ci.appveyor.com/api/projects/status/n3tq45kkupyvjihg/branch/v1.6-dev?svg=true)](https://ci.appveyor.com/project/eudaq/eudaq/branch/v1.6-dev)
+[![Build Status](https://travis-ci.org/eudaq/eudaq.svg?branch=v1.7-dev)](https://travis-ci.org/eudaq/eudaq) 
+[![Build status](https://ci.appveyor.com/api/projects/status/n3tq45kkupyvjihg/branch/v1.6-dev?svg=true)](https://ci.appveyor.com/project/eudaq/eudaq/branch/v1.7-dev)
 
 A Generic Multi-platform Data Acquisition Framework