add in keyfile support
take user and group from node attributes, have changes be in the default templates
adding support for chef_gem wihch is available for newer versions of chef
Manually merged #48 keyfileSupport:

Merge branch 'keyfileSupport' of git://github.com/addisonj/chef-mongodb into addisonj-keyfileSupport

Conflicts:
	attributes/default.rb
	mongodb/README.md
	recipes/default.rb
Version bump to 0.13.1, start using the changelog...
Fix typo in README

'replicatset' shoud be 'replicaset'
Fix typo in replicaset.rb

'replicatset' shoud be 'replicaset'
Merge pull request #143 from amferraz/patch-1

Fix typos
Merge pull request #110 from emourant/chef_gem_support

Adding support for chef_gem wihch is available for newer versions of chef
follow up to #110 'just-in-case'
Version bump 0.13.2