Add Development.MD file.

Development.md

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+# Development
+[ For internal contributors only ]
+
+## Getting Started
+
+To set up the repo locally, choose one of the following methods:
+
+### Method 1 (For FastCGI or Srcache)
+
+1. Create a WordPress website.
+2. Clone the [nginx](https://github.com/nginx/nginx) source code in a separate directory.
+3. Set up nginx using either FastCGI cache or Srcache module.
+4. Manually compile the binary for Nginx.
+5. Add a configuration block to redirect incoming requests to the WordPress website.
+6. Clone this repository inside the `wp-content/plugins` directory.
+
+### Method 2 (For Redis Cache)
+
+1. Install EasyEngine by following the [instructions](https://easyengine.io/docs/install/).
+2. Create a site with caching enabled using the command: `ee site create <site_name> --cache`
+
+3. Clone this repository inside the `wp-content/plugins` directory of the newly created site.
+
+## Testing
+
+To verify if a page is cached:
+
+1. Enable the timestamp option in Nginx Helper from the WordPress Admin Page:
+- This adds a comment with cache time and query count.
+- Cached pages should show only 1 query.
+
+2. Manually check the Redis database:
+- Search for keys beginning with the prefix specified in your Redis config, followed by a URL.
+
+## Contributing
+
+### Raising a Pull Request (PR)
+
+1. Create a new branch from `master` for your changes.
+2. Make your changes and commit them to your branch.
+3. Raise a PR targeting the `develop` branch.
+4. Assign the PR to a reviewer.
+5. Address any feedback and make necessary changes.
+6. Once approved, merge the PR into the `develop` branch.
+
+### Merging to Master
+
+1. After thorough testing on the `develop` branch, create a new PR.
+2. Set the source branch as the original feature branch that was merged into `develop`.
+3. Set the target branch as `master`.
+4. Assign reviewers and await final approval.
+5. Once approved, merge the PR into the `master` branch.