docs: Update README

Author: caiopiccirillo

README.md

@@ -1,18 +1,13 @@
-# C++ template
+# C++fig
 
-## C++ version
+## Configuration library
+This is a C++ library that provides a configuration system for applications. It allows you to define configuration options, load them from files, and access them in a type-safe manner.
 
-The CMakeLists file is defining C++20, change the following line for another version:
+## Development
 
-```
-set(CMAKE_CXX_STANDARD 20)
-```
-
-## Testing
-
-GTest is available for testing.
-
-## Availability
-
-This template is inteded to be used with VSCode on a development container and targeting/packaging to Linux.
-The environment contains some extensions that will aid the development.
+The project is structured to use devcontainer for development. To get started, follow these steps:
+1. Install [Visual Studio Code](https://code.visualstudio.com/) and the [Remote - Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers).
+2. Clone the repository to your local machine.
+3. Open the repository in Visual Studio Code.
+4. When prompted, reopen the repository in a container. This will set up the development environment with all necessary dependencies.
+5. Once the container is running, you can build and run the project using the CMake extension.