add dependency on r2_msgs so that catkin will build gazebo_interface in the correct order.
add another dependency line to make sure the build is repeatable
One more package.xml
Merged in codebot/nasa_r2_simulator/codebot/add-dependency-on-r2_msgs-so-that-catkin-1403340085419 (pull request #4)

add dependency on r2_msgs so that catkin will build gazebo_interface in the correct order.
CMakeLists.txt edited online with Bitbucket
Merge remote-tracking branch 'origin/hydro' into new_hydro

Conflicts:
	gazebo_interface/CMakeLists.txt
Merged in davidlu/nasa_r2_simulator/new_hydro (pull request #5)

Clean Up Metadata
added some extra world/launch files for R2
Merge branch 'hydro' of https://bitbucket.org/nasa_ros_pkg/nasa_r2_simulator into hydro
Merge remote-tracking branch 'nasa/hydro' into hydro

Conflicts:
	gazebo_interface/CMakeLists.txt
	gazebo_interface/package.xml
Merge branch 'hydro' of github.com:DLu/nasa_r2_simulator into hydro

Conflicts:
	r2_gazebo/CMakeLists.txt