Use the builtin raw_input function to prompt the
user in the aws setup script.
Make the ocr_queue lazily-instantiate the MySQL connection.
Also, allow the ocr_queue's log messages to be silenced.
A quick attempt at frame-limiting the helmet.
Another pass-through refactor should be done to clean up the code and
verify the frame-limiting behavior.
Make the mysql connection use a config file for the
connection info.