Added the PositionJointSaturationInterface and VelocitySoftLimitsInterface
classes. There are now saturation and soft limit classes for effort-controlled,
position-controlled, and velocity-controlled joints.
Updated the interface list.
Merge pull request #124 from jim-rothrock/hydro-devel

Added the PositionJointSaturationInterface and VelocityJointSoftLimitsInterface classes.
Created Travis continious integration setup
Merge pull request #126 from ros-controls/travis_continuous_integration

Created Travis continious integration setup
Update .travis.yml

https://travis-ci.org/ros-controls/ros_control
Update .travis.yml

Add recipient email.