Fix README example

Author: BranislavLazic

README.md

@@ -4,7 +4,7 @@
 ## Use it
 
 ```bash
-$ idi new myapp example.com/module/myapp
+$ idi new -n myapp -m example.com/module/myapp
 ```
 
 Go into your generated app and execute `go mod tidy`