mention standard in coding style doc

docs/development/coding-style.md

@@ -22,8 +22,7 @@ etc.
 
 ## JavaScript
 
-* Use a two space indent, no hard tabs.
-* End lines with a `;`
+* Write [standard](http://npm.im/standard) JavaScript style.
 * Files should **NOT** end with new line, because we want to match Google's
   styles.
 * File names should be concatenated with `-` instead of `_`, e.g.