Adding functions to Get or Delete directly (without creating a Bucket object first)
Adding all functions to use a (shared) default client rather then have an application keep a riak.Client object

Using the default client will be the preferred way to use in applications (unless simultaneous connection to multiple different clusters are needed of course)
Merge pull request #31 from tpjg/defaultclient

Merge changes to use a (shared) default client in master