/mturk assumes this file exists, so should appear in the default stroop example
actually, this is a cleaner way to handle IE not supported errors using the ExperimentError class
Creating first draft of contribution guidelines (Issue #52)

edited from gunicorn's template
Create THANKS.md
Update THANKS.md
Update CONTRIBUTING.md
Fix reject_worker on approve bug.
Merge commit '096f88f' into optional-launch-dashboard

Conflicts:
	psiturk/experiment.py