Update README.md

Author: vchu22

README.md

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 # S.O.S.
-A survival game takes place after a climate disaster. Created during ShellHacks 2022.
+A survival game takes place after a climate disaster. Created during ShellHacks 2022. For more details, please view our submission on [Devpost](https://devpost.com/software/post-apocalypse-survival-island).
+
 <img width="500" alt="SOS" src="https://user-images.githubusercontent.com/10492258/189563137-2153e891-4cd4-42d2-a62a-2afa36c3e4d1.png">
 <img width="500" alt="Gameplay" src="https://user-images.githubusercontent.com/10492258/189640645-5ffd5239-9476-47b2-a8ec-f480d051b2e4.png">