Adding test file path as argument of the rtcBot run command's arguments.

The new command to run rtcBot is:-
node test.js <bot_type> <test_file_path>

R=andresp@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/31419004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7263 4adac7df-926f-26a2-2b94-8c16560cd09d