Added beta.html

Added beta.html.
Added style.css

Added beta/style.css, which is beta/styles.css auto-prefixed with the
GruntJS plugin Autoprefixer
(https://github.com/nDmitry/grunt-autoprefixer).
Added styles.css

Added styles.css, which are the styles generated by the SASS in
beta/sass/.
Added SASS files

Added SASS files in beta/sass/.
Added main style.css

Added main (almost obsolete) style.css.
Added index.html

Added index.html.