Prepare for marketplace

* add vendor to gitignore
* small code adjustments
* add MIT license

components/Upcoming.php

@@ -1,7 +1,7 @@
 <?php namespace NicoSt\GCalendar\Components;
 
 use Cms\Classes\ComponentBase;
-use NicoSt\GCalendar\Classes\Event;
+use NicoSt\GCalendar\Classes\EventEntity;
 use NicoSt\GCalendar\Classes\GoogleCalendarService;
 use NicoSt\GCalendar\Models\Settings;
 
@@ -26,7 +26,8 @@ class Upcoming extends ComponentBase {
 
         return $connector->calendarList();
     }
-*/
+    */
+    
     public function defineProperties() {
         return [
             'maxEvents' => [
@@ -67,7 +68,7 @@ class Upcoming extends ComponentBase {
         foreach ($calendarEvents as $calendarEvent) {
             foreach ($calendarEvent as $event) {
                 // Map to data response object.
-                $eventObject = new Event();
+                $eventObject = new EventEntity();
                 $eventObject->setCalendarName($calendarEvent->summary);
                 $eventObject->setEventName($event->summary);
                 $eventObject->setLocation($event->location);