Week 12 begins -- JavaScript

Trying to come up with a list of topics that one MIGHT cover during a
week on JS. It will grow/be pared/morph into something awesome.
removed RWD markdown link
Merge pull request #13 from NanoXD/master

Update Introduction
Merge pull request #10 from jlembeck/master

Week 12 begins -- JavaScript
Update Bash

- Markdown parser has issues with bolding something after parentheses.
  escaping the characters did not work so HTML was added.
- I took a poll of five people which concluded they would use the word "folders" in place of directories.
- Change meaning of [terminal](http://en.wikipedia.org/wiki/Computer_terminal).
- Add intro to `man` pages.
- Add reference to ExplainShell