Deduplicate asset storage and update documentation

readme.txt

@@ -109,6 +109,20 @@ If no preference is set, the plugin will automatically use the source it was ins
 
 **Note:** GitHub and Gitea options require the Git Updater plugin to be installed and activated.
 
+== Contributing ==
+
+Contributions are welcome! Please follow these steps to set up a development environment:
+
+1. Install [LocalWP](https://localwp.com/) and create a clean site called "Plugin Testing" using the "Preferred" setup option
+2. Run "Site shell" once from the LocalWP page on the site's settings to ensure wp-cli is enabled
+3. Run "Add Run Configurations to VS Code" to update site configuration files in: ~/Local/plugin-testing/conf/
+4. Clone this repository to your local machine
+5. Use the build.sh and deploy-local.sh scripts to build and deploy the plugin for testing
+
+[AugmentCode.com](https://augmentcode.com/) is recommended as a good all-in-one AI IDE for plugin development and testing.
+
+Please feel free to submit a Pull Request with your improvements.
+
 == Frequently Asked Questions ==
 
 = Is it safe to remove plugin references? =