Add some scripts for continuous integration
Add basic travis config file
Share the schemes
Wrap make test command with quotes
Add the building result image to the README file
Merge branch 'master' into integrate-travis

Conflicts:
	Example/Example.xcodeproj/xcshareddata/xcschemes/DPMeterViewTests.xcscheme
	Example/Example.xcodeproj/xcshareddata/xcschemes/Example.xcscheme
Fix travis file extension
Return another exit code than 0 on Xcode build error
Run `pod install` before running the tests
Install cocoapods gem
Try installing cocoapods using a Gemfile
Add WaxSim as a submodule so that Travis can build it