added support for .scss files
Add SCSS example, sass sourcemap, and update tasks and dependencies

Updates:
- Sass (3.3)
- Compass (1.0.0.rc1)
- gulp
- gulp-changed
- gulp-imagemin
- gulp-notify
- gulp-ruby-sass
- gulp-util
- handlebars
- pretty-hrtime
Tabs to spaces :space_invader:

I finally caved...
Add MIT License

Fixes #19
Use require-dir to require tasks

- Better solution
- Allows importing tasks in subfolders, Fixes #21
Update README.md

Resolves #22, Resolves #27