moved stuff around and cleaned up some deprecation notices [save/save_doc]

lib/couchrest/mixins/attachments.rb

@@ -0,0 +1,31 @@
+module CouchRest
+  module Mixins
+    module Attachments
+    
+      # saves an attachment directly to couchdb
+      def put_attachment(name, file, options={})
+        raise ArgumentError, "doc must be saved" unless self.rev
+        raise ArgumentError, "doc.database required to put_attachment" unless database
+        result = database.put_attachment(self, name, file, options)
+        self['_rev'] = result['rev']
+        result['ok']
+      end
+
+      # returns an attachment's data
+      def fetch_attachment(name)
+        raise ArgumentError, "doc must be saved" unless self.rev
+        raise ArgumentError, "doc.database required to put_attachment" unless database
+        database.fetch_attachment(self, name)
+      end
+
+      # deletes an attachment directly from couchdb
+      def delete_attachment(name)
+        raise ArgumentError, "doc.database required to delete_attachment" unless database
+        result = database.delete_attachment(self, name)
+        self['_rev'] = result['rev']
+        result['ok']
+      end
+    
+    end
+  end
+end