Update README.md

unbug · unbug · commit 90f23613446c · 2012-11-26T11:23:59.000+08:00
diff --git a/README.md b/README.md
@@ -7,6 +7,7 @@ MIHTool helps  font-end engineer who works on mobile web app to debug his web pa
 You may install it on your iOS device with iOS5+.
 To see the Composited Render Layer Borders just switch the button to ON and restart the app.
 You may visit your web page as you want with the address bar.
+Press F11 or shake device to toggle fullscreen.
 
 ## How it works?
 
