Suggested Speed Improvements

Hey Amit, love your plugin! Really great work. I am going to be migrating all sites away from Userway to your plugin, mostly because of the speed improvement. However, there are two suggestions I have that will result in even better Google Pagespeed Insights scores.

1. Locally load the Google font https://fonts.googleapis.com/icon?family=Material+Icons. Doing this will avoid the external resource call, which in my testing was worth several points in Pagespeed Insights.
2. The second thing I would suggest is to hook the button into the footer, rather than the wp_head. The accessibility widget is great and important, however, it would be ok to load last, in the footer, to allow the above the fold content to load first.

I think these two small tweaks would deliver a huge speed (and score) improvement.

Thanks for your great work!

Brandon