Changed torch-lua to th; using sys.fexecute since PID is not always returned with sys.execute
Changed torch-lua to th calibrate example
paths.install_bin field has been removed in th; getting the path with a sys call
Updated parallelRemote example to use th and less cores
Switched to luajit instead of th
parallelRemote and parallelCalibrate examples find luajit path using paths.findprogram
Merge pull request #4 from andreirusu/master

Completed transition of package to the new torch7 environment