Merge pull request #18 from esd/master

Two small fixes
fixed handling of mutliple potential transport destinations. Should fix issue #19
[fix] Changed require('util') to require('util') for compatibility with node v0.8
Merge pull request #20 from node-migrator-bot/clean

Fix require("sys") calls
Implemented basic IPv6 support. Issue #21

to enable ipv6 you need to set address to be listened on (passed as options.address to sip.start)
to a local ipv6 address. Example:

sip.start({
  address: '::' // binding to all local ipv6 address
  },
  function(rq)
  ...
Fixed net.isIp (should be net.isIP).

issue #21
initial commit
Initial commit
Some preparation for npm registry publish
Fixed some TCP transport bugs
Updated README
fixing registration issues and bugs
changing to two ws clients to connect to load servers
remove contacts for both sides
change websocket port to 8060
change contact before sending to load servers
WEBRTC-46 : adding sequelize for persitance
remove forcing for syncing with database
adding rest service for getting registration by user
listen on 0.0.0.0