Added Russian Cyrillic-> Roman support (GOST 7.79-2000, System B; ISO (1995))

http://en.wikipedia.org/wiki/GOST_16876-71
Also made sure that reversing woks as well- was getting issues with rules applying
to substrings of longer rules first, which gave wrong Roman-> Cyrillic results.
Added myself to the Credit file.
Merge pull request #12 from SWPhantom/master

Add Russian Cyrillic support.