Get a Feedly developer token from here:
https://developer.feedly.com/v3/developer/
Get a Mercury API key from here (used to extract metadata on articles):
https://mercury.postlight.com/web-parser/
Download your Instapaper data here:
https://www.instapaper.com/user
Create a new board in Feedly and record the tag ID from the URL, e.g.\