fixed genesis json import from blocks.py
fixed genesis json import from blocks.py

gsalgado/pyethapp,changwu-tw/pyethapp,changwu-tw/pyethapp,ethereum/pyethapp,RomanZacharia/pyethapp,gsalgado/pyethapp,d-das/pyethapp,ethereum/pyethapp,vaporry/pyethapp,kustomzone/pyethapp,RomanZacharia/pyethapp