[new feature] support css media query
[update packages] body-parser->1.4.3, cookie-parser->1.3.2, connect-multiparty->1.1.0, csurf->1.3.0, errorhandler->1.1.1, express-session->1.6.4, moment->2.7.0, mongoose->3.8.12, serve-favicon->2.0.1, serve-static->1.3.0, sitemap->0.7.3, express->4.5.1, inflection->1.3.8, js-yaml->3.1.0, should->4.0.4
v0.21.0