woocommerce_coupon_options action added to write panel

admin/writepanels/writepanel-coupon_data.php

@@ -81,6 +81,8 @@ function woocommerce_coupon_data_meta_box($post) {
 				<label for="'.$field['id'].'">'.$field['label'].':</label>
 				<input type="text" class="short date-picker" name="'.$field['id'].'" id="'.$field['id'].'" value="'.esc_attr( $value ).'" /> <span class="description">' . __('(optional) The date this coupon will expire, <code>YYYY-MM-DD</code>', 'woothemes') . '</span></p>';
 			
+			do_action('woocommerce_coupon_options');
+			
 		?>
 	</div>
 	<?php