EDD Software Licensing Admin Notice Based on License State/Existence

gistfile1.php

<?php
/**
 * If the license is not entered or is not valid, show notice. For use with EDD Software Licensing
 * 
 * CHANGE sample_ TO YOUR FUNCTION PREFIX
 * 
 * https://easydigitaldownloads.com/extensions/software-licensing/?ref=184
 */
function sample_admin_notice() {

	$license_key	= trim( get_option( 'sample_license_key' ) );
	$status		= get_option( 'sample_license_status' );
	
	if ( false == $license_key || 'valid' != $status ) { ?>
		<div class="update-nag">
			<p>This should be a good start.</p>
		</div>
		<?php
	}
}
add_action( 'admin_notices', 'sample_admin_notice' );