xich/scotty — pull request #30 by tomingtoming (2012-09-26 14:22:01+00:00)
Title: Add function to response by ByteString

There are not enough functions to response by ByteString.
I want to use scotty like this.
```haskell
main = scotty 3000 do
gif <- liftIO $ readFile "filepath.gif"
get "/" $ do
header "Content-Type" "image/gif"
bytes gif
```
For example, ByteString for response body is resolved by file, database, STM or else.