Highlight syntax in "Object" example

maltsev · maltsev · commit 47d2ffa908a9 · 2017-09-03T10:41:44.000+03:00
diff --git a/README.md b/README.md
@@ -79,7 +79,7 @@ posthtml([require('posthtml-css-modules')('./cssModules/')])
 
 ### Object
 You can also pass CSS modules as an object to the plugin:
-```
+```js
 var posthtml = require('posthtml'),
     cssModules = {
         title: "_title_116zl_1 _heading_9dkf",
