Content and style updates.

Refs #1 and #3.
Adds files for Sass, Compass, and Jekyll goodness.

Need to start editing _sass/* files for CSS changes, then run `rake` to run
Jekyll and auto-update the CSS files when changed.
Adds static pages.
Removes CNAME.
Ignore _site dir.
Merge branch 'master' into gh-pages

Conflicts:
	index.html