Revert "Attempt to run bower until success..."

This reverts commit ea26f4c49459909a99cf18bad4609f6ad2cca121.
Moved to the new way of using user env variables in heroku
Echoing envdir to make sure it is passed in correctly
narrowed regex
Merge branch 'master' of https://github.com/mikewoudenberg/heroku-buildpack-yeoman
secured env_dir in the same way the others are saved
Update test
Scoped availability of env variables to grunt build

This way we do not pollute the env for the other commands
Merge branch 'master' into repeat-bower-install