added a summary in Buffer.cs

Aufgabe3/ConsoleApplication1/Buffer.cs

@@ -4,6 +4,11 @@ using System.Threading;
 
 namespace ConsoleApplication1
 {
+    /// <summary>
+    /// Creating a Class Buffer that contains a Queue that represent the "Parking lot".
+    /// The Queue is limited by the size that can manually be setted
+    /// </summary>
+
     public class Buffer
     {
         private Queue<Car> carQueue;