Merge pull request #91 from davetcoleman/hydro-devel

Adding Travis Continuous Integration to MoveIt
Merge pull request #92 from davetcoleman/hydro-devel

Triggering first Travis build
Added Travis badge to README
Merge branch 'hydro-devel' of https://github.com/ros-planning/moveit_core into hydro-devel
Changed to two cores in attempt to get build time below 50 min threshold