Sign In 

Think it would be helpful to tell users to sign in after they have spun up Heroku app.

When I initially tried to import data into the Heroku interface I got this error:

Error: {"error":"missing or unsupported content-type","status":400}

It did not take me long to figure out that I needed to sign in before importing json or a csv file, however I feel it would be helpful if we pointed out in the documentation to sign in before interacting with the Heroku app.