A better getting started guide

[rebound-ace]

I am new to Singer and tried out tap-zendesk to download some data from Zendesk. The good news is that it all worked. However the documentation - both on tap-zendesk as well as on singer-io is pretty poor.

I wrote up a small tap-zendesk-101 here: https://medium.com/getting-started-guides/extracting-ticket-data-from-zendesk-using-singer-io-tap-zendesk-57a8da8c3477 - and if there's interest can contribute it back here (or maybe link the README here to the blog post although that's not optimal).