Imports
- github.com/ethereum/go-ethereum/common
- github.com/ethereum/go-ethereum/core/types
- github.com/ethereum/go-ethereum/crypto
- github.com/ethereum/go-ethereum/rlp
- github.com/gorilla/websocket
- github.com/xxRanger/Percome19-Crowd-Demo/back-end/contract
- github.com/xxRanger/Percome19-Crowd-Demo/back-end/user
- github.com/xxRanger/Percome19-Crowd-Demo/back-end/zcrypto