Update Dependency Versions

- Updated spray-json 1.2.6 -> 1.3.0.
- Updated akka 2.3.3 -> 2.3.6.
- Updated play 2.3.0 -> 2.3.4.
- Updated newrelic 3.1.0 -> 3.11.0.
- Moved scalaz-concurrent from a test dependency to a compile
  dependency.

Added Scalaz As a Dependency

Updated Scalaz as a Library Dependency