I extended the README.md file to extend instructions for the rest of network examples
I modified the tap.sh script to give ownership to the user running it and avoiding running the examples with sudo. This would help someone using a debuger.
The previous given command `nc -l 8000` doesn't let me see anything and lead to a "WARN connect error: ConnectionReset". By explicitly changing the `local-port` of `nc` with the `-p` I can now see the `Hello` message printed, and the warning log disappeared.
