Enable matrix builds for mac/linux
Enable matrix builds for mac/linux

The Travis team has graciously enabled matrix builds for the Autowiring project.  Take advantage of this by building for Mac.

codemercenary/autowiring,codemercenary/autowiring,codemercenary/autowiring,leapmotion/autowiring,leapmotion/autowiring,codemercenary/autowiring,leapmotion/autowiring,codemercenary/autowiring,codemercenary/autowiring,leapmotion/autowiring,leapmotion/autowiring,leapmotion/autowiring