Adds example of controller creation

Author: kinseyost

Tutorial_Docs/controllerCRUD.MD

@@ -0,0 +1,7 @@
+# Controllers and CRUD Operations
+To create a controller use rails generate. You can also specify a list of 
+actions to add to the controller at time of creation.
+```
+rails generate controller subjects index show new edit delete
+```
+This will create the corresponding views for each of those actions.