Support for google storage

https://developers.google.com/storage/docs/pricingandterms

5 gig free, well for 2012. But pricing is very competitive

Usage:

c.datastore = Dragonfly::DataStorage::FogStore.new(
      :provider => :google,
      :bucket_name => "bucket_name",
      :google_storage_access_key_id => "id",
      :google_storage_secret_access_key => "secret"
    )

Should also work with rackspace storage but haven't tested it