Merge pull request #1 from ryandub/master

Implement delete function, update namespace and add to docs.
Merge branch 'master' of git://github.com/rackspace-cookbooks/rackspacecloud
Merge pull request #2 from ryandub/master

Fix type on metadata.rb
Merge branch 'master' of git://github.com/rackspace-cookbooks/rackspacecloud
Added LWRP for retrieving Rackspace Cloud Files. Updated documentation.
Merge pull request #3 from juliandunn/cloudfiles-lwrp

Added LWRP for retrieving Rackspace Cloud Files. Updated documentation.
Fix type in rackspace library.
Merge branch 'master' of git://github.com/rackspace-cookbooks/rackspacecloud
Update DNS resource to use authentication from recipe calling it.