Adding beginning of ros_control_gazebo integration
building
adding test xml files
adding robot sim interface example
working example controller manager and robot sim interface
Adding readme
Adding cmake commands to create xacro output dir
Moving parameters into controller tag
updates to readmes
Update README.md
Update README.md
Updating urdf to not be stupid, adding anothe readme
manopulator
Adding missing dep
Update ros_control_gazebo_tests/manifest.xml
Removing old urdf cmake
Update ros_control_gazebo_tests/README.md
Missing dep
API changes based on feedback from HiDOF
Applying fixes and style changes based on feedback by Adolfo

switching to camel-case interface, making RobotSim destructor virtual

fixing new api use, removing unneeded headers