codeforamerica/denver-schedules-api — pull request #78 by boonrs (2014-08-27 17:51:47+00:00)
Title: Throw error if environment variable doesn't exist

Handling of environment variables was previously all over the place. This standardizes it:
* Puts string at top of file.
* Throws an error if environment variable doesn't exist
* Exception: Admin username/password throws a special exception and doesn't use the standard.