Add template from Core API documentation
Remove superfluous comment for using require
Cleanup APP_KEY and APP_SECRET constants
Add prompt helper method
Add OptionParser with --help template
Add --config option for getting APP_KEY and APP_SECRET
Wrap template code in comments
Write configuration file with APP_KEY and APP_SECRET
Prompt user if config file exist when running --config
Ignore the config.yml file
Load setting from configuration file
Fix typo associated with setting the @app_secret
Add --authorize option to get access token