Update README.md

README.md

@@ -3,3 +3,5 @@ Set your Discord rich presence using [SwitchPresence-Rewritten](https://github.c
 
 # Setup
 Simply Create an application at the [Discord Developer Portal](https://discordapp.com/developers/applications/) call your application `Nintendo Switch`, `Oculus Quest` or whatever you would like and then enter your client ID and Device's IP into PresenceClient!<br>
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+If you're using QuestPresence, your icon name will be the application name in all lower capitalization with no spaces with the exception of some applications you can take a look [here](https://github.com/Sun-Research-University/PresenceClient/blob/master/Resource/QuestApplicationOverrides.json) for those exceptions, you will want to take of a note of the `CustomName` field and format using the above instructions for your icon name. Sometimes an app can have a `CustomKey` field that is filled out you will want to use this instead of the formatted `CustomName`.