Github pages for Ember CLI website

* mobile friendly
* new design
* based on [jekyll](jekyllrb.com)

Fixes #33

Screenshots:

![ios simulator screen shot apr 5 2014 1 35 54
am](https://cloud.githubusercontent.com/assets/1131196/2622004/5e4000b8-bc84-11e3-99f7-002e463b6439.png)

![ios simulator screen shot apr 5 2014 1 36 22
am](https://cloud.githubusercontent.com/assets/1131196/2622006/5e494f2e-bc84-11e3-9369-657702e7a7eb.png)

![ios simulator screen shot apr 5 2014 1 38 05
am](https://cloud.githubusercontent.com/assets/1131196/2622008/7c116f78-bc84-11e3-9fb4-914c4bdb56c6.png)

![ember cli command line tool for the ambitions web applications
2014-04-05 01-43-16 2014-04-05
01-43-51](https://cloud.githubusercontent.com/assets/1131196/2622015/45414cc4-bc85-11e3-85c5-8cb3a7a3a135.jpg)

![ember cli command line tool for the ambitions web applications
2014-04-05 01-44-34 2014-04-05
01-44-36](https://cloud.githubusercontent.com/assets/1131196/2622018/60adc41a-bc85-11e3-9d1f-d88b88ba7479.jpg)
Fixes urls
Merge pull request #275 from twokul/fix-for-url

Fixes urls
More fixes
Merge pull request #276 from twokul/moar-fixes

More fixes
Removes download button

Replaces it with `npm install -g ember-cli`
Merge pull request #277 from twokul/change-download-link

Removes download button
remove bad 'the'
node modules should be ignored
tiny fixes
Merge pull request #279 from fsmanuel/gh-pages

tiny fixes
Minor fixes
Merge pull request #281 from twokul/site-fixes

Minor fixes
Minor url fixes

scumbag @twokul can't fix things properly apparently.
Merge pull request #282 from twokul/url-fix

Minor url fixes
Adds roadmap page
Merge pull request #283 from twokul/roadmap

Adds roadmap page
<head> updates in _includes/head.html

-Removing "chrome=1" from "X-UA-Compatible" meta tag. See https://developers.google.com/chrome/chrome-frame/
-Updated <title> to fix the typos; Also tweaked to better align with the Ember slogan.
Merge pull request #284 from alexdiliberto/gh-pages

<head> updates in _includes/head.html
Minor fix