Use Xcode 7.

joshaber · joshaber · commit 326af3cbe36f · 2015-10-06T16:34:20.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -10,6 +10,7 @@ os:
   - osx
 env:
   - TARGET_ARCH=x64
+osx_image: xcode7
 
 matrix:
   include:
