Merge pull request #5 from cburbridge/master

parameterised config file working with launch files; head state published.
Modified the launch file to start the Asus Xtion and updated the readme
Merge pull request #6 from RaresAmbrus/master

Updated the launch file to start the Asus Xtion
Merge pull request #7 from cburbridge/master

New services to emergency stop and motor enable
Added catkin package with urdf file and launcher for the robot_state_publisher, also added ptz in the urdf
Merge remote-tracking branch 'upstream/master'
Merge pull request #8 from nilsbore/master

Add modifed urdf file with ptz unit and robot_state_publisher launch file in new package robot_description. The only changes are in a new package. The urdf file compiles correctly.
bug fix for publishing before publisher ready.