Fixed a small bug which occurs when we are both an OBEP and IBGW.
Other small refactoring changes.
Fixed a bug where async_receive_from is not called if the received
packet is too short (h/t psi).
Moved README.md file.
Merge branch 'master' of http://git.repo.i2p/r/i2pcpp

Conflicts:
	transport/UDPTransport.cpp