Merge pull request #14 from dmaciejak/master

fix compilation issue on ubuntu 12.10
version bump
fix crash issue when using data attribute
Merge pull request #15 from dmaciejak/master

fix test case and issue with data attribute reported as #12
Add Travis CI integration
  - Add Gemfile for Bundler support
  - Fix dependencies
Convert to Rake ExtensionTask for native extension build
Add libpcap primitive support (create, set_rfmon, set_promisc, set_snaplen, set_timeout, activate).
Version bump