Adds a typedjson source
Split the TypedJson and TypedJsonLzo
Merge branch 'develop' into typedJsonSource

Conflicts:
	project/Build.scala
Make references to json4s types private
Bump version json4s for 2.11 support
Making fields private
Merge pull request #1129 from twitter/typedJsonSource

Adds a typedjson source
Merge branch 'develop' of https://github.com/twitter/scalding into develop