Attempt to add "read the script" step before running the script (LP#1159032).

This is half in jest. The web page makes it all sound very easy, but
README.md on the master branch warns to RTFS first. This makes for an
unpleasant out-of-box experience: "oh I just sprayed crap all over
/etc, and I was supposed to RTFS *before* I did that".

If you actually try this patch out, you will see that my GIMP skills
are pathetic and my CSS knowledge is not up to the task. ;-( But hey,
at least I modified the text successfully!