Add instructions for building and running the project

.gitignore

@@ -34,3 +34,4 @@
 # some locale folders
 cmake-build-debug
 .idea
+build

README.md

@@ -8,7 +8,43 @@ This is a demonstration in C++ of a game called [Game of life](https://en.wikipe
 3. Any live cell with more than three live neighbours dies, as if by overpopulation.
 4. Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.
 
-### License & Copyright
+## Building and Running
+
+### Prerequisites
+
+- CMake (Minimum Version 3.16)
+- A C++ compiler (e.g., GCC, Clang)
+
+### Building the Project
+
+1. **Clone the repository**:
+   ```bash
+   git clone https://git.vdm.dev/Llewellyn/game-of-life.git
+   ```
+2. **Navigate to the project directory**:
+   ```bash
+   cd game-of-life
+   ```
+3. **Create and enter the build directory**:
+   ```bash
+   mkdir build && cd build
+   ```
+4. **Generate build system files with CMake**:
+   ```bash
+   cmake ..
+   ```
+5. **Compile the project**:
+   ```bash
+   cmake --build .
+   ```
+   
+6. **Running the Project**:
+   - After building, run the executable from the build directory.
+   ```bash
+   ./game-of-life
+   ```
+
+## License & Copyright
 - Written by [Llewellyn van der Merwe](https://github.com/Llewellynvdm), April 2020
 - Copyright (C) 2020. All Rights Reserved
 - License [GNU/GPL Version 2 or later](http://www.gnu.org/licenses/gpl-2.0.html)