replace unmaintained static-server with serve

scripts/server.js

@@ -1,7 +1,7 @@
-/* eslint-disable no-console */
+const http = require('http');
 const chalk = require('chalk');
 const gaze = require('gaze');
-const StaticServer = require('static-server');
+const serve = require('serve-handler');
 
 const buildCSS = require('./build_css.js');
 
@@ -10,7 +10,13 @@ gaze(['css/**/*.css'], (err, watcher) => {
   watcher.on('all', () => buildCSS());
 });
 
-const server = new StaticServer({ rootPath: process.cwd(), port: 8080, followSymlink: true });
-server.start(() => {
+const server = http.createServer((request, response) => {
+  return serve(request, response, {
+    symlinks: true
+  });
+});
+
+server.listen(8080, () => {
+  /* eslint-disable no-console */
   console.log(chalk.yellow(`Listening on ${server.port}`));
 });