Update README.md

Added some people who should possibly go in the credits!
quick and lazy frota updater & server loading, note that this requires a "http://dota2cr.com/curfrota.txt" containing version info (currently 13.12.19) and a "http://dota2cr.com/curfrota.zip" containing the addon files. "addoninfo.txt", for example, must be in the zip's root directory.
Merge pull request #8 from tetl/master

Merged tetl's changes