add first uncle test
add first uncle test

ruchevits/solidity,arkpar/solidity,chriseth/solidity-doc-test,douglas-larocca/solidity,ethers/solidity,chriseth/solidity,LianaHus/solidity,debris/solidity,gluk256/solidity,vaporry/solidity,ruchevits/solidity,ruchevits/solidity,ruchevits/solidity,shahankhatch/solidity