Adds a Joint Homing tool script
Adds a Joint Homing tool script

If your robot is unhomed due to the ESTOP
being enabled during boot up, you can invoke
this script to
1) enable the robot
2) auto-home all the joints after verifying the
   enable state

$ rosrun intera_interface home_joints.py

RethinkRobotics/intera_sdk,RethinkRobotics/intera_sdk