Support for PHP 7

Hello,

Your plugin is only one error away of being able to be run without errors with PHP 7.
From the scan the problem to fix is the following :
– file : /login-security-solution/login-security-solution.php
– error : 1013 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.

Could you fix this one please ?