Coverge on Travis
Coverge on Travis

- Force use of system ruby
- native gems do not compile on system ruby +XCode 5.1 without ARCHFLAGS, see https://github.com/pivotal-sprout/sprout-wrap/issues/36
- Travis is now using Mavericks for OSX workers

vintrepid/sprout-homebrew,wendorf/sprout-homebrew,wendorf/sprout-homebrew,vintrepid/sprout-homebrew,pivotal-sprout/sprout-homebrew,pivotal-sprout/sprout-homebrew