[Codespaces] Started codespaces

.devcontainer/devcontainer.json

@@ -0,0 +1,14 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {
+
+  },
+  "customizations": {
+    // Configure properties specific to VS Code.
+    "vscode": {
+      // Add the IDs of extensions you want installed when the container is created.
+      "extensions": ["ms-vscode.cmake-tools", "ms-vscode.cpptools-extension-pack"]
+    }
+  },
+  "postCreateCommand": "cd extern;git submodule update --init;"
+}

CMakeLists.txt

@@ -1,5 +1,5 @@
-# Need CMake 3.0
-cmake_minimum_required (VERSION 3.28.0)
+# Need CMake 3.16
+cmake_minimum_required (VERSION 3.16.0)
 
 # This is the name of the repository
 project ("queue")

README.md

@@ -6,6 +6,8 @@
 
  A minimal queue implementation written in C. 
 
+ > 0 [Try it](#try-it)
+ >
  > 1 [Download](#download)
  >
  > 2 [Build](#build)
@@ -22,6 +24,11 @@
  >>
  >> 5.2 [Function definitions](#function-definitions)
 
+## Try it
+[![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/Jacob-C-Smith/queue?quickstart=1)
+
+Wait for a few moments, then click the play button on the bottom of the window. This will run the example program.
+
  ## Download
  To download queue, execute the following command
  ```bash