Automatically read files when they've changed. This does what 'autoread'
promises to do but doesn't do. This plugin requires
This is different from the built-in
'autoread' option in that it periodically
checks if the file on the disk has changed, which is not what
'autoread' only checks if the file is changed on when certain events
:Autoread to start checking, and
:AutoreadStop to stop.
:help :Autoread (or the help file) for more information.