Error in Benchmarking

[amdshameer]

Few lines missing in the CMakeLists of https://github.com/ros-planning/moveit_ros/blob/hydro-devel/benchmarks/benchmarks/CMakeLists.txt of hydro branch. But they are available in the indigo branch. It gives error while doing Benchmarking. The followings line to be added after line no: 15

install(
PROGRAMS scripts/moveit_benchmark_statistics.py
DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
)

Please fix if it is necessary
Those lines are available in indigo branch:
https://github.com/ros-planning/moveit_ros/blob/indigo-devel/benchmarks/benchmarks/CMakeLists.txt

@isucan @sachinchitta @davetcoleman