feat: Makefile, package.json, client/gulpfile

* replace gulp-ruby-sass with gulp-sass
chore(package.json): remove versioned nodemon
chore(bootstrap.scss): rename to avoid importing from includePaths
feat(gulpfile): compile assets in server side with gulp
chore(Makefile): remove unused condition
feat: Makefile, client/gulpfile

* mkdirp with tmp/public
* clean.tmp before server and test
* gulp-minify-css for application.css
chore(Makefile): remove publish task
chore(publish): v0.0.1 by Makefile