update instructions about where to open the javascript console

Author: chrisvfritz

src/v2/guide/index.md

@@ -53,7 +53,7 @@ var app = new Vue({
 </script>
 {% endraw %}
 
-We have already created our very first Vue app! This looks pretty similar to just rendering a string template, but Vue has done a lot of work under the hood. The data and the DOM are now linked, and everything is now **reactive**. How do we know? Just open up your browser's JavaScript console and set `app.message` to a different value. You should see the rendered example above update accordingly.
+We have already created our very first Vue app! This looks pretty similar to just rendering a string template, but Vue has done a lot of work under the hood. The data and the DOM are now linked, and everything is now **reactive**. How do we know? Just open your browser's JavaScript console (right now, on this page) and set `app.message` to a different value. You should see the rendered example above update accordingly.
 
 In addition to text interpolation, we can also bind element attributes like this: