Implemented get_singular() and get_plural()
Removed error message for missing init() in child class
Merge branch 'feature/refactor' of github.com:dlozupone/wp-mvc-base into feature/refactor

* 'feature/refactor' of github.com:dlozupone/wp-mvc-base:
  Implemented get_singular() and get_plural()
  Removed extraneous text
  Fixed undeclared path property

Conflicts:
	models/class-base-model-cpt.php
Modified __construct()
txt domain property now required
fixed typo