Update README.md

Author: Bonkeyzz

README.md

@@ -24,4 +24,4 @@
 ``` "app_name" ``` -- Application name (This does not affect the RPC App, its just for identification.)<br/>
 ``` "app_id" ``` -- Application ID (You can create an Application [here](https://discord.com/developers/applications).)<br/>
 
-Applications are saved in the **apps** directory. 
+Applications must be saved in the **apps** directory.