[fix] plugin defined for jQuery $ (re: issue#1)

js/jquery-eu-cookie-law-popup.js

@@ -21,7 +21,7 @@ if (!window.console) window.console = {};
 if (!window.console.log) window.console.log = function () { };
 // ^^^
 
-var EuCookieLawPopup = (function() {
+$.fn.euCookieLawPopup = (function() {
 
 	var _self = this;
 
@@ -251,7 +251,7 @@ var EuCookieLawPopup = (function() {
 
 $(document).ready( function() {
 	if ($(".eupopup").length > 0) {
-		(new EuCookieLawPopup()).init({
+		$(document).euCookieLawPopup().init({
 			'info' : 'YOU_CAN_ADD_MORE_SETTINGS_HERE',
 			'popupTitle' : 'This website is using cookies. ',
 			'popupText' : 'We use them to give you the best experience. If you continue using our website, we\'ll assume that you are happy to receive all cookies on this website.'