Many thanks for this great extension and the update. I've just upgraded from v1.1 to v1.2 and thought I would provide some instructions for upgrading that I hope are useful.
1) Remove the previously installed version and don't worry, the data is not removed, so all your Tag Meta items will be saved. Navigate to 'Extensions' > 'Install/Uninstall'. Uninstall Tag Meta from both the 'components' and 'plugins' sections of the Extension Manager.
2) Download the latest Tag Meta zip file, you will need to unzip this first to install the TWO included extensions (e.g. com_tagmeta_1.2.zip and plg_tagmeta_1.2.zip). As you have probably guessed one is a component and the other is a plugin. You need to install both separately.
2) You can check both are installed properly by navigating to 'Extensions' > 'Install/Uninstall'. Tag Meta should be present in both the components and plugins sections of the Extension Manager.
3) You now need to enable and configure the Tag Meta plugin... 'Extensions' > 'Plugin Manager'. Select 'System - Tag Meta', change 'Enabled' to Yes and configure the parameters.
4) To continue using Meta Tag navigate to 'Components' > 'Meta Tag' and you will see your previously configured items.
5) More usage information available in 'Components' > 'Meta Tag' > 'About'.