Add https://github.com/rubensayshi to CREDITS.
Add https://github.com/rubensayshi to CREDITS.

Magicking/pycoin,richardkiss/pycoin,antiface/pycoin,antiface/pycoin,mperklin/pycoin,Magicking/pycoin,devrandom/pycoin,ptcrypto/pycoin,XertroV/pycoin,gitonio/pycoin,devrandom/pycoin,tomholub/pycoin,pycoin/pycoin,ptcrypto/pycoin,shayanb/pycoin,shivaenigma/pycoin,gitonio/pycoin,Pan0ram1x/pycoin,moocowmoo/pycoin,pycoin/pycoin,richardkiss/pycoin,mperklin/pycoin,thirdkey-solutions/pycoin,XertroV/pycoin,Kefkius/pycoin,moocowmoo/pycoin,zsulocal/pycoin,shivaenigma/pycoin,Kefkius/pycoin,zsulocal/pycoin,tomholub/pycoin,shayanb/pycoin,Pan0ram1x/pycoin,thirdkey-solutions/pycoin