Footer links

[WebsByTodd]

Right now there's a twitter icon that goes nowhere. We should add working and relevant links here.

[nedtwigg]

Also

• at the bottom of https://gitfromscratch.com/intro
• 
• but at the bottom of https://gitfromscratch.com/
• 
• (no nav at all, should have a "Next" of some sort)

[nedtwigg]

On this topic, the epilogue mentions this:

If there are parts that you feel could have been described better, let us know in the live chat.

I think that live chat is dead, should figure out what the new dealio is, if any.