Update to use newer and maintained packages
Merge remote-tracking branch 'upstream/master'
Allow passing options through to clients
Make HashRing public

Useful in order to be able to add/remove servers, for example for auto-scaling or connection problems
Add `on` and `once` listeners
Updating readme
Merge pull request #4 from tobek/dev

Ability to pass Redis client options, event listeners, public HashRing