Clarify shortcut-to-preferences. Thanks to @kerrizor for pointing it out in #9
Learning DVCS is important; git is just one tool.

While git is far-and-wide the most-adopted DVCS in the ruby
and modern open-source worlds, it is just one tool and there
will be others to replace it. This commit changes wording in
order to pose the need for DVCS and Git as a modern-and-valid
solution.

Incorporates [feedback][] from @kerrizor

[feedback]: https://github.com/Ada-Developers-Academy/curriculum/pull/7#discussion_r6671506
Don't conflate "distributed" in DVCS with remote servers.

SVN is an example of a non-distributed VCS, and the given example
applies to it as well. This commit attempts to clarify that the
"distributed" attribute allows us to do work *without* the
servers, in addition to being able to push & pull code.

Incorporates [clarification] suggested by @meonkeys.

[clarification]: https://github.com/Ada-Developers-Academy/curriculum/pull/7#discussion_r6671645
Share MD links to Git Immersion.
Merge pull request #7 from yaauie/01-git-improvements
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.
added topics and resources to Week 6
removed RWD markdown link
Update Introduction

- Remove double Github link
- Change wording on classroom structure
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
Merge pull request #14 from NanoXD/Bash

Update Bash
Create testing_wiki.md

Wiki for Testing Practices & Study.
Specify which type of variable is shared with the view.
Fix grammatical errors.

'need' to 'needs'
'controllers' to 'controller's'
Merge pull request #21 from Ada-Developers-Academy/rails_cleanup

Rails: Fixes to controller section
Rename testing_wiki.md to testing_resources.md
Update testing_resources.md
Update introduction.md

Adding a missing word.