Add contributing guide to README.md

This update adds a comprehensive guide to the README file detailing the steps for interested individuals to contribute to the Elsa Workflow project. The guide covers everything from forking and cloning the repository, to understanding the structure of the solution, submitting changes via a pull request, and the importance of opening an issue first for discussing intended changes.

README.md

@@ -141,4 +141,42 @@ public class SendEmailWorkflow : WorkflowBase
 
 Elsa allows you to define workflows using a visual designer. The following example shows how to receive HTTP requests and send an email in response:
 
-![Elsa ships with a powerful visual designer](./design/screenshots/http-send-email-workflow-designer.png)
+![Elsa ships with a powerful visual designer](./design/screenshots/http-send-email-workflow-designer.png)
+
+
+## Contributing
+
+We welcome contributions from the community and are pleased that you are interested in helping to improve the Elsa Workflow project! Here are the steps to contribute to our project:
+
+### 1. Fork and Clone the Repo
+To get started, you'll need to fork the repository to your own GitHub account. You can do this by navigating to the [Elsa Workflow GitHub repository](https://github.com/elsa-workflows/elsa-core) and clicking the "Fork" button in the top-right corner of the page. Once you have forked the repo, you can clone it to your local machine using the following command:
+
+```bash
+git clone https://github.com/YOUR_USERNAME/elsa-core.git
+```
+Replace `YOUR_USERNAME` with your GitHub username. For more information on forking a repo, check out the GitHub documentation [here](https://docs.github.com/en/github/getting-started-with-github/fork-a-repo).
+
+Incorporating the details about the "bundles" folder and its projects into the second point about opening the `Elsa.sln` using your favorite IDE, we can expand the instructions to guide developers on where to start and what projects they might want to explore first. Here's an updated version of that section with the additional information:
+
+### 2. Open `Elsa.sln` Using Your Favorite IDE
+After cloning the repository, navigate to the cloned directory and open the `Elsa.sln` solution file with your preferred IDE that supports .NET development, such as Visual Studio, JetBrains Rider, or Visual Studio Code with the appropriate extensions.
+
+Within the solution, you will find a "bundles" folder containing three projects designed to help you get started and explore the capabilities of Elsa Workflow:
+
+- **Elsa.Server.Web**: This project is a reference ASP.NET Core application that acts as a workflow server. It's a great starting point if you want to understand how Elsa functions as a server-side workflow engine.
+
+- **Elsa.ServerAndStudio.Web**: This project serves a dual purpose. Like `Elsa.Server.Web`, it acts as a workflow server. Additionally, it hosts the Elsa Studio Blazor WebAssembly app. This is the perfect project to run if you want to see the full capabilities of Elsa, including both the server aspects and the client-side studio experience in one application.
+
+- **Elsa.Studio.Web**: This project is a reference Blazor WebAssembly application that solely hosts the Elsa Studio Blazor WebAssembly app. It requires a running Elsa server application to connect to. Use this project if you're interested in focusing on the Elsa Studio UI and its interactions with an Elsa workflow server.
+
+### 3. Submit a PR with Your Changes
+Once you have made your changes, commit them and push them back to your fork. Then, navigate to the original Elsa Workflow repository and create a new Pull Request. Ensure your PR description clearly describes the changes and any relevant information that will help the reviewers understand your contributions. For a detailed guide on creating a pull request, visit [Creating a pull request from a fork](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/creating-a-pull-request-from-a-fork).
+
+### 4. Open an Issue First
+Before you start working on your changes or submit a pull request, please open an issue to discuss what you would like to do. This step is crucial as it ensures you don't spend time working on something that might not align with the project's goals or might already be under development by someone else. You can open an issue [here](https://github.com/elsa-workflows/elsa-core/issues).
+
+This approach helps us streamline contributions and ensures that your efforts are aligned with the project's needs and priorities. We look forward to your contributions and are here to support you throughout the process. Thank you for contributing to the Elsa Workflow project!
+
+---
+
+Remember to replace any placeholder URLs or instructions with the specific details relevant to the Elsa Workflow project as necessary.