Deep merge implementation for C#

Only includes tests for public api features, not deep merge specifics.

http://antix.co.uk/Blog/Merging-objects-using-JSON.NET

https://github.com/JamesNK/Newtonsoft.Json/pull/94
Deep merge implementation for python

Only includes tests for public api features, not deep merge specifics.

http://www.xormedia.com/recursively-merge-dictionaries-in-python/
Deep merge implementation for ruby

Only includes tests for public api features, not deep merge specifics.
Merge pull request #56 from ResourceDataInc/deep-merge

Implement deep merge for environment configuration