move some things for udp. added a class for kademlia.
move some things for udp. added a class for kademlia.

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