Updated the README

README.md

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 # Javafx template
 
-Template for  single-module javafx project, with maven setup for Java 16 and JavaFX 16, and JUnit 5 (Jupiter) and TestFX for testing.
+A repository with three variants of a javafx projects, with maven setup for Java 16 and JavaFX 16, and JUnit 5 (Jupiter) and TestFX for testing.
 
-To make the project more interesting, it is the start of an [RPN](https://en.wikipedia.org/wiki/Reverse_Polish_notation) calculator (look for `// TODO`) markers). The core logic is almost implemented (in [Calc.java](javafx-template/src/main/java/app/Calc.java)), the fxml file (in [App.fxml](javafx-template/src/main/resources/app/App.fxml) is almost complete, but the controller class (in [AppController.java](javafx-template/src/main/java/app/AppController.java) is pretty limited. And last, but not least, there is a TestFX-based test (in [AppTest.java](javafx-template/src/test/java/app/AppTest.java), see the [README](javafx-template/src/test/java/app/README.md) for details about what it tests).
+To make the project(s) more interesting, it is the start of an [RPN](https://en.wikipedia.org/wiki/Reverse_Polish_notation) calculator (look for `// TODO`) markers). The core logic is almost implemented (in [Calc.java](javafx-template/src/main/java/app/Calc.java)), the fxml file (in [App.fxml](javafx-template/src/main/resources/app/App.fxml) is almost complete, but the controller class (in [AppController.java](javafx-template/src/main/java/app/AppController.java) is pretty limited. And last, but not least, there is a TestFX-based test (in [AppTest.java](javafx-template/src/test/java/app/AppTest.java), see the [README](javafx-template/src/test/java/app/README.md) for details about what it tests).
+
+## javafx-template
+
+Template for  single-module, single-package javafx project.
+
+## packages-template
+
+Template for  single-module, multi-package javafx project.
+
+## modules-template
+
+Template for  multi-module, multi-package javafx project.
 
 ## Trying it out
 
-The project in javafx-template can be tried out in various ways:
+All projects can be tried out by cd-ing into the corresponding folder and using `mvn`:
 
 - compile with `mvn compile` (after `cd javafx-template` of course)
 - test with `mvn test` (it should fail until you complete the RPN calculator)