adding version bump script.
adding version bump script.

harmishhk/catkin,thaddeustaylor/catkin,jack-oquin/catkin,harmishhk/catkin,ros/catkin,shyamalschandra/catkin,asmodehn/catkin,thaddeustaylor/catkin,harmishhk/catkin,scpeters/catkin,wkentaro/catkin,meyerj/catkin,beni55/catkin,asmodehn/catkin,scpeters/catkin,meyerj/catkin,jack-oquin/catkin,ros/catkin,beni55/catkin,scpeters/catkin,wkentaro/catkin,thaddeustaylor/catkin,ros/catkin,asmodehn/catkin,jack-oquin/catkin,beni55/catkin,meyerj/catkin,wkentaro/catkin,shyamalschandra/catkin,shyamalschandra/catkin