Tentative fix to  issue #6
Another attempt at issue #6
Fixed issue #6 FINALLY.
Vance's tweaks for the experiment
Created ros_subproc_test.py to test delay between timestamp and subprocess opening
Renamed ros_subproc_test.py and made it an executable script
Incorporated changes in cs473vision submodule
Merge branch 'webcam_timestamp' into vance_experiment
Merge branch 'vance_experiment'