fixed build status link

README.md

@@ -1,4 +1,4 @@
-[![Build Status](http://ci.zammad.org/job/ZammadUnittest-ruby-1.9.3-p362/badge/icon)](http://ci.zammad.org/job/ZammadUnittest-ruby-1.9.3-p362/)
+[![Build Status](http://ci.zammad.org/job/ZammadUnittest-ruby-2.0.0-p195/badge/icon)](http://ci.zammad.org/job/ZammadUnittest-ruby-2.0.0-p195/)
 
 Welcome to Zammad
 =================