add ROS_IP to init, needed across network.
add ROS_IP to init, needed across network.

RethinkRobotics/baxter_examples,wjchen84/baxter_examples,jaspell/baxter_examples,Sannoso/baxter_examples,umassrobotics/baxter,umassrobotics/baxter,RethinkRobotics/baxter,baxter-flowers/baxter_tools,RethinkRobotics/baxter_tools,davetcoleman/sdk-examples,davetcoleman/sdk-examples