Blueprint composer

https://trello.com/c/WZWswaln/1740-api-blueprint-api-composer

Related: https://github.com/apiaryio/matter_compiler/issues/5
Before release:

```bash
$ heroku config:set BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi.git
```

After merge: PLEASE, reopen https://github.com/apiaryio/apiblueprintorg/pull/13
```
coffee> "abc\n"
'abc\n'
coffee> "abc\n".trim()
'abc'
```

AFAIK, you have no guarantee about the `buff` granularity; it may be per-line, it may be whole output, it may be random subset. 

I was just wondering whether this is bug in matter compiler (adding `\n` even when not needed), or whether you are stripping it just because ;)