CMakeLists actualised for Hydro
rtt_gazebo_activity: added GazeboActivity that gets triggered by RTTSystem::clockUpdate()
rtt_gazebo_activity: added gazebo service
rtt_gazebo_activity: only use gazebo time if /use_sim_time parameter is set to true
rtt_gazebo_activity: added missing dependency to roscpp
rtt_gazebo_activity: reset the Logger's reference time when switching to Gazebo time
rtt_gazebo_plugin: added missing orocos_kdl dependency
Merge commit '604b9e0' into gazebo-activity

Conflicts:
	rtt_gazebo_plugin/package.xml
gazebo_rtt_plugin: fixed find_package(orocos_kdl)
Merge branch 'orocos_kdl-find-package-fixes' into gazebo-activity
gazebo_activity: added header install rule
rtt_gazebo_activity: added build and run dependency to rtt_rosgraph_msgs
Merge pull request #10 from meyerj/added-missing-orocos-kdl-dependency

rtt_gazebo_plugin: added missing orocos_kdl dependency
Merge pull request #9 from meyerj/remove-ocl-orocos-packages-from-package-xml

Removed ocl orocos packages from dependencies in package.xml files
rtt_gazebo: adding metapackage
Merge branch 'master' of github.com:jhu-lcsr/rtt_gazebo
resolving merge conflict
Merging changes from gazebo-activity branch, and fixing some KDL resolution problems
Adding rtt_ros_integration to the travis env
Updating documentation