Updated readme

README.md

@@ -1,3 +1,26 @@
 # unreal-launcher
 
 A simple Unreal Engine project launcher mainly for *nix OS.
+
+## How to
+Edit the `project.json` file with your projects and unreal installation path, then run the app.
+
+### Installing deps
+```bash
+go get fyne.io/fyne/v2@latest
+go mod tidy
+```
+
+### Running the app
+```bash
+go run .
+``` 
+
+### Building the app
+```bash
+go build .
+./unreal-pm
+```
+
+## License
+This project is released under the MIT license.