Please include a screenshot and some detail on features in the readme

[gpoole]

A screenshot and slightly more detailed description of what this plugin does (or does not do) would be much appreciated as it helps a lot with figuring out whether it's going to be worth the effort to set up.

A few questions I had as an outsider from skimming the readme were:

• Does this show a status or just provide a button to trigger builds?
• Does this show a status badge in the toolbar like the old status badge or do you have to go to the dashboard to check it?
• If I install and set this up does it store any access tokens it needs in shared storage so other users can see it or does each user individually need to authenticate with Netlify like some other plugins?