Check parent controller name

Author: Aschen

src/Kuzzle.js

@@ -9,7 +9,6 @@ const
   ServerController = require('./controllers/server'),
   SecurityController = require('./controllers/security'),
   MemoryStorageController = require('./controllers/memoryStorage'),
-  BaseController = require('./controllers/base'),
   uuidv4 = require('./uuidv4'),
   proxify = require('./proxify');
 
@@ -517,7 +516,7 @@ Discarded request: ${JSON.stringify(request)}`));
    * @returns {Kuzzle}
    */
   useController (ControllerClass, accessor) {
-    if (!(ControllerClass.prototype instanceof BaseController)) {
+    if (!(ControllerClass.prototype.__proto__.constructor.name === 'BaseController')) {
       throw new Error('Controllers must inherits from the BaseController class.');
     }