Small fix in xacro file.
Gazebo related changes.
URDF of 3AT divided into 2 files.
Merge pull request #8 from ZdenekM/master

Just minor fix.
Updated the Pioneer-3AT xacro to have colour in Gazebo, and added a launch file.
Added launch file
Changes to wheel collision geometry (robot was unable to rotate).
Changes to wheel collision geometry and Gazebo settings.
Merge pull request #10 from ZdenekM/master

Minor fixes.
Updated the Pioneer-3dx to work with Gazebo in Hydro
Merge pull request #9 from allenh1/master

Synchronizing with master