Added GreeceCoin
Fixed GreeceCoin to Greececoin
Merge pull request #64 from sentricorp/feature/Intergrate_GreeceCoin

Added GreeceCoin
Added Execoin to Coinsmanager
 Fixed cases on Execoin
Merge pull request #67 from sentricorp/feature/Integrate_EXEC

Added Execoin to Coinsmanager