improved example and readme

Heyo!

  I -love- the project! Will be working with it quite a bit for a hobby project of mine which, long languishing in Ruby, will be on Node soon enough!

  I spent a while just figuring out what the events were named (since they've .toLowerCase'd from what they are in /lib/MumbleMessageMap.js) - additionally you have to catch the UserStates and Channel States and etc etc - thought I'd add what I learned to the examples!

  Let me know if you'd prefer I match any particular coding style more closely - i'd be happy to clean this up for ya - but I figured it would save someone else some time :+1: 

  Thanks again for the project! Have a good day!

- Seandon Mooy
admin@erulabs.com