Installation

1. Download EasyResponsiveTables_UNZIP.zip from your JoomlaX account.
2. Unzip it first. Inside is the installable package, plg_system_easyresponsivetables_1.0.3.zip.
3. In your Joomla administrator, go to System › Install › Extensions and upload plg_system_easyresponsivetables_1.0.3.zip.
4. On a fresh install, the plugin is turned on automatically. You'll find it under System › Plugins as System - Easy Responsive Tables.
5. Clear the Joomla cache (System › Clear Cache), plus any page cache or CDN you use.
6. Open a page with a table on your phone, or narrow your browser window below 600 px.

Upgrading: install the new package over the old one. Your settings are kept, and so is whether the plugin is on or off. An upgrade never turns on a plugin you had turned off.

Uninstalling: uninstall it from System › Manage › Extensions. Since the plugin never changes stored content, your tables go back to their original markup straight away.