Debug and integrate

Hi! I bought today your plugin with extended license !

1.It has several errors with debug active.I’ve done a few but not this :

Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead. in …..wp-includes/functions.php on line 2925.

2.There is a possibility easier to integrate plugin in my theme.Can you help me with the way to plug in polaroid-slider.php.

define( ‘POLAROIDSLIDER_PATH’, plugin_dir_path(__FILE__) );
define( ‘POLAROIDSLIDER_DIR’, ‘polaroid-slider’);

Ths!