twitter/finatra — pull request #115 by murz (2014-02-16 20:24:25+00:00)
Title: Add helper for setting contentType

The docs indicate that this is how you should set contentType:

```render.body("custom response").contentType("application/mine").toFuture```

I think the helper in this pull request is necessary to make that syntax possible, because without it I get the following error:

```Option[String] does not take parameters```