check whether costmap is initalized before publishing
don't set initialized until updateMap is called
uncommented trajectory_planner_ros from catkin_package LIBRARIES so other packages can find it
removing .py from executable script
install crop map
Merge pull request #164 from DLu/hydro

Misc Bug Fixes
Merge pull request #155 from jihoonl/hydro-devel

Install crop_map python script.
Merge pull request #152 from KaijenHsiao/hydro-devel

uncommented trajectory_planner_ros from catkin_package LIBRARIES so other packages can find it
Merge pull request #149 from jonbinney/costmap_init

check whether costmap is initalized before publishing
Fix for #5