chore: update README.md (#364)

* chore: update README.md

CONTRIBUTING.md

@@ -93,10 +93,11 @@ You can access the API backend server through `http://localhost:3000`
 
 You will be able to access the Project repository through this link:
 
+[![Open in Codesandbox](https://img.shields.io/badge/-Open%20in%20CodeSandbox-%230088ff?style=for-the-badge)](https://codesandbox.io/p/github/riccardoperra/codeimage)
+
 https://codesandbox.io/p/github/riccardoperra/codeimage
 
 ![img.png](docs/codesandbox_fork.png)
-*Preview of CodeSandbox projects with Fork action*
 
 [You don't know CodeSandbox Projects?](https://codesandbox.io/post/announcing-codesandbox-projects)
 

README.md

@@ -23,8 +23,6 @@ features to speed up the process to post in social media.
 
 CodeImage architecture consist of a PNPM monorepo, currently subdivided in `packages` and `apps`.
 
-![Dependency Graph](./docs/dependency_graph.png)
-
 ### Apps
 
 #### [@codeimage/app](./apps/codeimage)
@@ -73,7 +71,7 @@ with the owners of this repository before making a change.
 
 See the [CONTRIBUTING.md](./CONTRIBUTING.md) guide for more details.
 
-
+[![Open in Codesandbox](https://img.shields.io/badge/-Open%20in%20CodeSandbox-%230088ff?style=for-the-badge)](https://codesandbox.io/p/github/riccardoperra/codeimage)
 ---