Update setup_authentication.mkd

Anthony O.

2014-08-08 bdcb8d6d8c858e71f21a274654a41d6d5ab799fc

 src/main/java/com/gitblit/manager/IUserManager.java

@@ -24,6 +24,7 @@
    *
    * @param username
    * @return true if the specified username represents an internal account
     * @since 1.4.0
    */
   boolean isInternalAccount(String username);