Added ruby and ruby-related files, as well as files used during build.

These files include scripts for building and deploying the website, as
well as extra functionality for the users of the website. The Gemfile
also helps ensure the necessary gems are installed.

In addition, scss files help with making CSS easier to organize. Though
the full power of Sass has not yet been leveraged by generalizing CSS
definitions or using other available functionality.

Signed-off-by: Byron Sanchez <bfs5030@gmail.com>