Create ROS.gitignore

A ROS gitignore copied form moveit_ros.
https://github.com/ros-planning/moveit_ros/blob/hydro-devel/.gitignore

ROS.gitignore

+~$
+.swp$
+build/
+bin/
+lib/
+msg_gen/
+srv_gen/
+msg/.*Action\.msg$
+msg/.*ActionFeedback\.msg$
+msg/.*ActionGoal\.msg$
+msg/.*ActionResult\.msg$
+msg/.*Feedback\.msg$
+msg/.*Goal\.msg$
+msg/.*Result\.msg$
+msg/_.*\.py$
+
+\.pcd$
+.pyc$
+
+# Generated by dynamic reconfigure
+\.cfgc$
+/cfg/cpp/
+/cfg/.*\.py$
+
+# Ignore generated docs
+.dox$
+.wikidoc$
+
+# eclipse stuff
+.project
+.cproject
+
+# qcreator stuff
+CMakeLists.txt.user
+
+srv/_.*\.py$
+\.pcd$
+.pyc$
+qtcreator-*
+*.user
+
+/planning/cfg
+/planning/docs
+/planning/src
+
+*~$
+
+# Emacs
+.#*
+
+# Catkin custom files
+CATKIN_IGNORE