Renaming to CouchRest Model

Refactored basic directory structure.
Moved to ActiveSupport for Validations and Callbacks.
Cleaned up older code, and removed support for text property types.

lib/couchrest/model/callbacks.rb

@@ -0,0 +1,27 @@
+# encoding: utf-8
+
+module CouchRest #:nodoc:
+  module Model #:nodoc:
+
+    module Callbacks
+      extend ActiveSupport::Concern
+      included do
+        extend ActiveModel::Callbacks
+
+        define_model_callbacks \
+          :create,
+          :destroy,
+          :save,
+          :update,
+          :validate
+
+      end
+
+      def valid?(*) #nodoc
+        _run_validation_callbacks { super }
+      end
+
+    end
+
+  end
+end