Tell Travis to use Xcode 7.1

tonyarnold · tonyarnold · commit 0aae6d686b72 · 2015-10-27T16:42:31.000+11:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode611
+osx_image: xcode7.1
 
 script:
   - rake clean
