Adding keywords for future use section in Token.h
Adding keywords for future use section in Token.h

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