small haddocks changes
refactoring: move Servant.Text to Servant.Utils.Text
improve the routing mechanism by augmenting the routing error type with some information and a sound monoid instance. this addresses #10
rename GetParam to QueryParam everywhere
rename RQBody to JsonBody everywhere
rename JsonBody to ReqBody
rename JsonBody to ReqBody in tests too -- this closes #11 for now
introduce InvalidBody as the 'stickiest' route mismatch reason. code review changes too, to close #14 close #11 close #10
raise InvalidBody when failing to decode the request body
add a testcase to very that we reject invalid json bodies with HTTP status 400
Merge pull request #14 from zalora/better-route-mismatch

improve the routing mechanism with failure causes and do some renaming
Basic QQ data types and parsing.
Flip fixity of TH sub.

  And do some general cleanup.
Add new request -> response syntax
Add queryParam.

        And update names.
Some tests.

        Mostly instrumentation for them.