[Bsod-mentors] Key tag thingies

[meonline at me-online.me.uk]

I'm not 100% sure if these haven't already been implemented, but if they
haven't, this might be a nice idea.

I'm assuming that most of the tutorial writers will be referring to one
key or the other (I know I will), so it would be good if we could do
something like {{A}} or whathaveyou, which will then insert a pretty image
of the "A" key.

This would just help to create a standard format accross the tutorials.
It'd also mean we don't all have to use seperate images, we all share the
same ones.

Any thoughts?

-Michael