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/errors.rb

@@ -0,0 +1,23 @@
+# encoding: utf-8
+module CouchRest
+  module Model
+    module Errors
+
+      class CouchRestModelError < StandardError; end
+
+      # Raised when a persisence method ending in ! fails validation. The message
+      # will contain the full error messages from the +Document+ in question.
+      #
+      # Example:
+      #
+      # <tt>Validations.new(person.errors)</tt>
+      class Validations < CouchRestModelError
+        attr_reader :document
+        def initialize(document)
+          @document = document
+          super("Validation Failed: #{@document.errors.full_messages.join(", ")}")
+        end
+      end
+    end
+  end
+end