Upgraded the third-party library dependencies to their latest versions.  The includes JSON.Net to version 6.0.5, NancyFX to 0.23.2, and NSubstitute to version 1.7.2.
Updated the Rest API to be /api0/ to reflect the version that is going away.  This should at least add some temporary backwards compatibility.
Stash - API rebuild.
Merge branch 'feature/Issue-69-RebuildRestApi' of https://github.com/merchantwarehouse/stumps into feature/Issue-69-RebuildRestApi