dm-mongo-adapter patch

diff --git a/lib/mongo_adapter/adapter.rb b/lib/mongo_adapter/adapter.rb
index 2ae35f8..51e3be3 100644
--- a/lib/mongo_adapter/adapter.rb
+++ b/lib/mongo_adapter/adapter.rb
@@ -5,6 +5,10 @@ module DataMapper
 
       class ConnectionError < StandardError; end
 
+      def storage_exists?(name)
+        true
+      end
+
       # Persists one or more new resources
       #
       # @example
diff --git a/lib/mongo_adapter/model.rb b/lib/mongo_adapter/model.rb
index 803178a..c05569c 100644
--- a/lib/mongo_adapter/model.rb
+++ b/lib/mongo_adapter/model.rb
@@ -23,9 +23,9 @@ module DataMapper
         elsif Hash == type
           type = DataMapper::Mongo::Property::Hash
         elsif DateTime == type
-          type = DataMapper::Mongo::Types::DateTime
+          #type = DataMapper::Mongo::Types::DateTime
         elsif Date == type
-          type = DataMapper::Mongo::Types::Date
+          #type = DataMapper::Mongo::Types::Date
         end
 
         super(name, type, options)
diff --git a/lib/mongo_adapter/support/date_time.rb b/lib/mongo_adapter/support/date_time.rb
index 92ff196..319de8c 100644
--- a/lib/mongo_adapter/support/date_time.rb
+++ b/lib/mongo_adapter/support/date_time.rb
@@ -1,7 +1,7 @@
 class DateTime
   # @api public
   def self.to_mongo(value)
-    value.to_time.utc
+    value.utc.to_time
   end
 
   # @api public