Update README.md

2020-04-05 20:23:33 +02:00 · 2020-04-05 20:23:33 +02:00 · c807d3c650
--- a/README.md
+++ b/README.md
@ -7,7 +7,7 @@ Requires Fabric API.
 ## Setup
-1. Clone the repository.
+1. Clone the repository. Then run `./gradlew genSources`
 2. Edit the code you want.
 3. To build run the following command: