Updates to readme

Hello,

Sorry to just bomb into your repo and make suggestions on your readme.

I was reading your wiki and thinking to myself "Wow I had no idea what stenography actually was. This is cool as hell." So then I'm thinking "Well, what kind of product could you build with this?".

You had a section on learning steno where pretty much each lesson was a particularly great reason to learn to use your software - specifically the first one.

I figure maybe you could put that kind of thing front and center, to better foster attention from interested members of the community.

Again, sorry to just drop in and be a jerk.