.env setup instructions could be improved

[miguelhughes]

As a newcomer to node & express, I was not familiar with the .env files and misunderstood the readme instructions.
The setup instructions state: "Setup .env file with the relevant variables"
I thought this meant to just put my values in example.env. But "example.env" is not automatically picked up by the code as is, it also needs to be renamed to ".env".

I would suggest editing the readme to reflect this, adding an explicit step of:
rename "example.env" to ".env"

[miguelhughes]

Alternatively, we could throw an error if the .env file isn't found; changing the first in index.js to:

const result =require('dotenv').config()

if (result.error) {
  throw result.error
}

[douglundin]

I agree. This caught me up as well.