Fixed raml schema includes and a schema json error
Made /features more RESTful

/features/file_formats/list seems like an RPC. The more restful way is to just
GET /features/file_formats. It by default then returns all of the file formats
that are supported. The original GET /features/file_formats?file_format="..." is
achieved by having an optional file_format query parameter that can limit the
returned list to formats of interest.

The same ideas above apply for the /features/transforms.
Merge pull request #5 from abalmos/raml_features

Raml features