Add a provider to handle replicaset creation

- Can initiate a replicaset if not initiated
- Can add members to an existing replicaset
Fix the documentation about waiting for mongod
Merge pull request #84 from puphpet/master

Spelling: mondodb => mongodb
Release 0.6.0

Updated Modulefile for release 0.6.0 to add client support for
RedHat systems. Updated CHANGELOG
Merge pull request #85 from hogepodge/release_0.6.0

Release 0.6.0
Remove eNovance copyright due to CLA

Remove eNovance copyright as having signed the CLA grants the copyright
to PuppetLabs.
Merge pull request #82 from enovance/fcharlier/replicaset

Add a provider to handle replicaset creation