feat(cancellation): adds readme example

README.md

@@ -46,6 +46,26 @@ Q: Does this component use all my cores? A: OH YES. It goes WROOOM.
 
 ![image](https://user-images.githubusercontent.com/7696515/95597125-29310900-0a46-11eb-99ce-663b34506a7a.png)
 
+
+Q: Can I enable cancellation of a longer running task? 
+
+A: Yes, now you can! In your component, just add a right click menu action like so:
+
+```cs
+
+    public override void AppendAdditionalMenuItems(ToolStripDropDown menu)
+    {
+      base.AppendAdditionalMenuItems(menu);
+      Menu_AppendItem(menu, "Cancel", (s, e) =>
+      {
+        RequestCancellation();
+      });
+    }
+
+```
+
+
+
 ### Debugging
 
 Quite easy: