Add url support

This allows go give an url of the type:
redis://user:password@server:port/dbname to configure the connection.
Try to not install older redis module, if theres is a newer one (e.g. 0.8.x)
remove console.log
fix url.auth problem
- adding documentation for  config option
merge conflicts for pull request #98
Merge pull request #100 from crossman/master

Adding documentation for url option
update redis to 0.10.x
Merge branch 'master' of https://github.com/visionmedia/connect-redis