Removed extra rlp.encode wrapper from signing
Removed extra rlp.encode wrapper from signing

ebuchman/daoist_protocol,jnnk/pyethereum,ckeenan/pyethereum,ebuchman/daoist_protocol,vaporry/pyethereum,pipermerriam/pyethereum,inzem77/pyethereum,ddworken/pyethereum,holiman/pyethereum,ethers/pyethereum,ethereum/pyethereum,karlfloersch/pyethereum,shahankhatch/pyethereum,harlantwood/pyethereum,karlfloersch/pyethereum,ethermarket/pyethereum,pipermerriam/pyethereum,shahankhatch/pyethereum,ethereum/pyethereum