Added bombardment in c#

11_Bombardment/csharp/Program.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace Bombardment
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            var bombardment = new Bombardment();
+            bombardment.Play();
+        }
+    }
+}