Adds the .idea directory to .gitignore.
Adds the ability to parse users who should be whitelisted from the command line.
Adds any users specified on the command line to the list of whitelisted users.
Extracts the logic to determine if whitelisted users are specified into a separate method.
Simplifies the check for determining whether whitelisted users are present.
Adds an a doc comment for the whitelisted users arg.
Replaces the manual parsing of whitelisted users from the command line with the OptionParser library.
Merge pull request #5 from jeremyjarrell/master

Adds the ability to specify additional whitelist users from the command line