* updates collada meshes with correct units to be properly visualised in
both rviz and gazebo
* fixes related with a positioning bug in the kobuki base
* fixes camera_rgb_frame position (refs #60)
* introduces new kinect mesh with nice surface
* moves create-specific parts (mostly gazebo related) out to create
package
Merge branch 'master' of https://github.com/turtlebot/turtlebot