heroku/heroku — pull request #402 by hone (2012-06-25 16:38:21+00:00)
Title: stringify all the config var values, handle booleans.

The Heroku API can return a boolean for a config var, like this:

{"COMMIT_HASH"=>true}

This will cause the client to blow up. This sets the value to true or
false depending on the boolean, so client doesn't blow up.

This will handle both the nil/boolean case as well as stringifying all the values.