Fix comment syntax in build-all-methods.js (#304)

Fixes #303

Author: edg2s

src/all-methods.js

@@ -1,6 +1,6 @@
 'use strict';
 
-<!-- This file is built by build-all-methods.js; do not edit it directly. -->
+/* This file is built by build-all-methods.js; do not edit it directly. */
 module.exports = [
 	'add',
 	'addBack',

tools/build-all-methods.js

@@ -22,7 +22,7 @@ const allMethods = Object.keys( $.fn )
 fs.writeFile(
 	'src/all-methods.js',
 	'\'use strict\';\n\n' +
-	'<!-- This file is built by build-all-methods.js; do not edit it directly. -->\n' +
+	'/* This file is built by build-all-methods.js; do not edit it directly. */\n' +
 	'module.exports = ' +
 	JSON.stringify( allMethods, null, '\t' ).replace( /"/g, '\'' ) +
 	';\n',