Adds a more flexible launch file
Adds compilation to the README
Updates the readme

Calibration routine now can be run from any location
Merge branch 'master' of github.com:kartikmohta/vicon

Conflicts:
	README.md
Generalizing the ViconOdom launch file

If you need IPC, use the new ViconOdomIPC launch file as you were
using the ViconOdom launch file.
Merge pull request #4 from justinthomas/master

Adds generic launch files for vicon_odom