Merge pull request #1 from Guldecoin-org/master

Added support for Guldencoin by https://github.com/mindfox
Small guldencoin fixes
Update README.md
Fixed GLD rate source
Merge branch 'master' of https://github.com/GENERALBYTESCOM/batm_public
Added exchange rate API
Fixed coin symbol
Merge branch 'master' of https://github.com/GENERALBYTESCOM/batm_public

Conflicts:
	server_extensions_api/src/com/generalbytes/batm/server/extensions/ICurrencies.java