Heroku requires the app to serve static assets (and doesn't install a plugin automatically to do so with Rails 4).
DRY it up, inspired by a recent 37signals blog about multiple environments.
Rails 4 defaults to a synchronous log.
Ch-ch-ch-ch-changes...
Merge pull request #103 from carbonfive/features/heroku-tweaks-for-rails4-103

Heroku compatibility tweaks for serving static assets and synchronous logging.