Merge pull request #488 from nerdishbynature/travis

Update travis.yml to use new OS X image

Author: joshaber

.travis.yml

@@ -1,13 +1,4 @@
+osx_image: xcode6.4
 language: objective-c
-install:
-- brew install cmake
+install: script/bootstrap
 script: script/cibuild
-notifications:
-  email: false
-  campfire:
-    on_success: always
-    on_failure: always
-    template:
-      - "Build %{build_url} of %{repository}: %{message}"
-    rooms:
-      secure: IxO/lskcwkcrvbgq9UsI4rjD7auSbbc52QdOcEzh5klXf6KkmIRSrJDUbsRGJ6GahlB0ELfgTcr0ycqsYhW5M9mNwzWR1cerbedA2HT0sOy7uvgGQwAY+iiikCsIMuYQJ1qvb6DrrpgyejQWXW5cOEVbNuoPV45DE0lsPUHcpyg=