diff --git a/.gitmodules b/.gitmodules
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+[submodule "godot-cpp"]
+	path = godot-cpp
+	url = https://github.com/godotengine/godot-cpp.git
+	branch = master
diff --git a/README.md b/README.md
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+# GDExtension-Summator
+<div id="badges" align="center">
+  <a href="https://ko-fi.com/flamelizard">
+    <img src="https://img.shields.io/badge/Support my work-red?style=for-the-badge&logo=kofi&logoColor=white" alt="Ko-Fi Badge"/>
+  </a>
+  <a href="https://twitter.com/patrick_exe">
+    <img src="https://img.shields.io/badge/Twitter-blue?style=for-the-badge&logo=twitter&logoColor=white" alt="Twitter Badge"/>
+  </a>
+  <a href="https://mastodon.gamedev.place/@flamelizard">
+    <img src="https://img.shields.io/badge/Mastodon-purple?style=for-the-badge&logo=mastodon&logoColor=white" alt="Mastodon Badge"/>
+  </a>
+</div>
+
+This repository is for showcasing the new GDExtension system in Godot 4.
+The C++ code is from the [Custom modules example](https://docs.godotengine.org/en/latest/development/cpp/custom_modules_in_cpp.html "Click to get to the docs") of the Godot docs.
+
+----> **Feel free to use this repository as a template for your GDExtensions**
+
+## :tada: Using the extension
+After compiling the extension succesfully, you can now use the Summator Class inside Godot
+```gdscript
+func _ready() -> void:
+	var s = Summator.new()
+	s.add(10)
+	s.add(20)
+	s.add(30)
+	print(s.get_total())
+        # outputs 60 in the console
+	s.reset()
+```
+
+## 🔢 Versioning
+This repository is being updated regularly to work with the latest beta release of the master (4.0) branch. If you can't compile the extension, please open an issue.
+
+----> **Most Recent Update: Godot 4 RC 4 working**
+
+## ❓ What? How? Why?
+If you are not sure what each file in this project does or if you want to know in detail: I wrote a blog post about the purpose of each file on [my Ko-Fi page](https://ko-fi.com/post/GDExtension--Godot-SUPERCHARGED--How-to-get-star-Z8Z4GLUSE).
+
+## Alternative templates
+If you want to work with the latest master and godot-cpp version, check out this [GDExtension template by Nathan Franke](https://github.com/nathanfranke/gdextension).
+If you are more used to CMake than Scons you can use [this template here by asmalone](https://github.com/asmaloney/GDExtensionTemplate)
+
+
+## ℹ️ Contributing
+If you can't compile the extension, please open an issue with the error log in your terminal and/or the error log in the editor (if you can't run the example scene).
+
+PRs for improvements are very welcome!
+
+## ⚙️ Building the extension
+
+### VSCode Compilation (only applicable if you are using VSCode as your code editor)
+For the initial build you can run the vscode task `initial-build-extension`. This compiles both godot-cpp and the extension. For all subsequent builds, you only need to run the task `build-extension`.
+
+### Manual Compilation
+
+To compile the extension you need to follow these steps:
+
+0. Click on the green "Use this template" button to generate the repository for you
+
+1. Clone the extension recursively from this repository
+```bash
+# --recursive to automatically load the submodule godot-cpp
+# The git adress can be found under the green "Code" dropdown menu
+git clone --recursive (--GITHUB ADRESS--)
+```
+
+2. Make sure you are on the right commit of the godot-cpp repository
+```bash
+git status
+# this show's you the commit. Make sure that it is released to a similar/the same time as the master branch (especially during the beta)
+```
+To make sure you have the right commit, here the [link to the pinned updated issue with the commit hashes](https://github.com/godotengine/godot-cpp/issues/874)
+
+3. Make sure you are in the top level of the repository so `pwd` returns the following
+```bash
+pwd
+.../GDExtensionSummator
+```
+
+4. Go inside the godot-cpp folder
+```bash
+cd godot-cpp
+```
+
+5. Compile godot-cpp and generate the bindings (only needed once when starting development or when there is an update of the submodule)
+```bash
+scons target=template_debug
+# OR simpler (the above is the default configuration):
+scons 
+
+# For beta 2 and earlier:
+scons target=debug generate_bindings=yes
+```
+
+6. Go back to the top level of the directory
+```bash
+cd ..
+```
+
+7. Compile the extension
+```bash
+scons target=template_debug
+# OR simpler (the above is the default configuration):
+scons
+
+# For beta 2 and earlier:
+scons target=debug
+```
diff --git a/godot-cpp b/godot-cpp
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+Subproject commit 4f2b1ed2e84042c5bf9604eed212f34adf68a5b7