Refactor logging, fix issue #3, issue #20, issue #16
Updates to Readme/changelog/gemspec for release
Add support for option to spoof mac

This will only happen if spoofing mac address.

This code(query code) is pretty terrible, needs to be re-factored
completely.

Unfortunately, I don't have time to work on it now as this has to go
into our production build now.
Return enumerators for Packet#each_ methods
Add accessor for spoof_mac
Fix changelog for actual release details
Release 0.8.5, bugfix release.

Fixed issues #20, #16, #3.
Merged pull request #33
Add option to enable/disable mac address spoofing when spoofing source address