feat: add github badge - #181

feat: add github badge#181

aelf-lxy wants to merge 4 commits into

AElfProject:feature/test-chain-utilAElfProject/aelf-web3.js:feature/test-chain-utilfrom

aelf-lxy:feature/test-chain-utilaelf-lxy/aelf-web3.js:feature/test-chain-utilCopy head branch name to clipboard