Rename essentials

lib/abstract-class.js

@@ -2,10 +2,10 @@
  * Module dependencies
  */
 var util = require('util');
-var jutil = require('./jutil');
-var Validatable = require('./validatable').Validatable;
-var List = require('./list');
-var Hookable = require('./hookable').Hookable;
+var jutil = require('./jutil.js');
+var Validatable = require('./validations.js').Validatable;
+var List = require('./list.js');
+var Hookable = require('./hooks.js').Hookable;
 var DEFAULT_CACHE_LIMIT = 1000;
 var BASE_TYPES = ['String', 'Boolean', 'Number', 'Date', 'Text'];