docs(readme): add contributing section

And add codespaces to contributing gudelines as recommended option

Author: gund

CONTRIBUTING.md

@@ -37,8 +37,9 @@ It is important to meet environment requirements in order to execute commands lo
 
 There are 2 ways to do that:
 
-1. Using docker you can boot a dev container and connect to it from VSCode using [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) which will have everything ready (Recommended)
-2. Manually install required dependencies on your local device:
+1. Use [Github Codespaces](https://docs.github.com/en/codespaces) to make changes directly online where everything is preconfigured (Recommended)
+2. Using docker you can boot a dev container and connect to it from VSCode using [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) which will have everything ready
+3. Manually install required dependencies on your local device:
    - Install NodeJS v16+
    - Install NPM v8+
 

README.md

@@ -13,6 +13,7 @@
 [![Greenkeeper badge](https://badges.greenkeeper.io/gund/ng-dynamic-component.svg)](https://greenkeeper.io/)
 
 ### Hey! There is a [proposal for new API](https://github.com/gund/ng-dynamic-component/discussions/484)!
+
 So if you are using this library please give your vote/feedback.
 
 <details>
@@ -434,6 +435,11 @@ To see example of how to implement custom component injector - see
 [`ComponentOutletInjectorDirective`](projects/ng-dynamic-component/src/lib/component-injector/component-outlet-injector.directive.ts)
 that is used to integrate `NgComponentOutlet` directive with inputs/outputs.
 
+## Contributing
+
+You are welcome to contribute to this project.
+Simply follow the [contribution guide](/CONTRIBUTING.md).
+
 ## License
 
 MIT © [Alex Malkevich]([email protected])