Update README.md

Author: GavinJiacheng

README.md

@@ -29,8 +29,7 @@ I know its UI is very bad. I will improve it in the future.
 You can play it here:
 <br />
 https://jiachenggavin.github.io/Games_Js/
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+![Alt text](https://github.com/Jiachenggavin/Games_Js/blob/master/screenshot/die.png)
 Using JavaScript to make Thor move and attack. you can find its Js code here: https://github.com/Jiachenggavin/Games_Js
 
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