Update Notifications

Forgive me if this is covered somewhere but I can't seem to find it on a quick search...

I've downloaded and begun installing a few plugins from WPMU DEV. On a few of them, there is a text file that tells me to install the "update notifications" plugin to my mu plugins folder. My confusion is that there are more than 1 of these text files. So do I overwrite it each time? Or is one time simply good enough? Thanks!