Modified the response url of queries.

New APIS!

/query
  - request
    - body is json object
      {
        length: <int>,
        version: <codegen version>,
        string: <codes encoded as base64 string>
      }
  - response
    - important parts
    {
      match: {
        metadata: <cool stuffs>,
        offset: <more cool stuffs>
      },
      success: <boolean>
    }

/import
  - request
    - body is json object, see
      tools/metadata/results/sample_metadata.json
  - response
    - boolean of success or something...
Updated sample_metadata file to meet the spec.
Merge branch 'master' of github.com:TeamFauna/dumbo