Add CI format check script

bin/get-html-ls.js

@@ -0,0 +1,13 @@
+const glob = require('glob');
+const pattern = '**/*.html';
+const options = {
+	'ignore': [
+		'_site/**/*.html',
+		'node_modules/**/*.html'
+	]
+};
+
+glob(pattern, options, (error, files) => {
+	if (error) throw error;
+	process.stdout.write(files.join('\n') + '\n');
+});