Added the .NET Nancy framework

Added the .NET Nancy framework to the benchmark suite.

This is based off the `aspnet` and `servicestack` examples and
implements the first three benchmark cases (json, single db query, and
multi db query) using the MySQL backend.
Merge branch 'nancyfx' of https://github.com/kppullin/FrameworkBenchmarks into kppullin-nancyfx
Update sort order