misc. code clean-up.
[NEW] using SCSS/SASS.
[FIX] add a hack for SCSS to run with '—watch' with test server and compile for build.
Refer to the 'README.md'  for more information.
[FIX] a work-around for setting vars. on the fly using env. variables.
Refer to the read me for more information.
[FIX] ignoring '.css' output of SCSS compilation.
clean-up, files removed.