ADD: implemented IPV6 support
FIX: fixed bug when calling verbose mode
FIX: fixed verbose message on IPv6
Added credits to AUTHORS and changelog in README and in ping.py
Adding missing socket family parameter.
Added return code to verbose_ping.
Re-adding original functionality to run properly at the command line.
Moving sys.exit() out of verbose_ping.
Adding ICMP Message dictionaries
Merge pull request #1 from pferate/master

Adding changes from pferate
Merge pull request #2 from estemendoza/master

Adding support for IPv6