Add the @return types

src/Authentication.php

@@ -82,7 +82,7 @@ class Authentication
 
   /** Setter/Getter for debug
     * @param integer|null $debug The debug value to get/set
-    * @return the actual value or this
+    * @return integer|self the actual value or this
     */
   public function debug ($debug = null)
   // {{{
@@ -380,7 +380,7 @@ class Authentication
     * properties of the class.
     * @param string $email The email to check
     * @param string $password The password to check
-    * @return an array containing the user data if the authentication is
+    * @return array containing the user data if the authentication is
     *         correct,
     *         an exception if noting is found
     */