Seed file

[samhstn]

Ensure the seed file is working.
Add back in how to the seed file how to to run this file and what is for
Add this information to the readme

[ZooeyMiller]

We're looking into running the seed file, but it seems we're getting permissions issues again (using the key that you @Shouston3 gave us), and don't have the "HOOK_ENDPOINT", and can't quite see what it needs to be. Happy to update the README.md adding the relevant instructions when we've worked them out.

[finnhodgkin]

I'm guessing the hook_endpoint is the same one I used in the hook creation script last week (https://tudo-app.herokuapp.com/api/hooks).

That portion of the seeding should already be done for all dwyl repos that @Shouston3's key has access to, so for now we could comment that section out and concentrate on the database seeding.

But yeah, it's error-ing due to bad permissions responses from the Github API so either we need to add some response handling or get a different key.

[ZooeyMiller]

The error turned out to be fixed by making it so that if Poison.decode is passed an empty string, we instead pass it `"{}".

I believe this is the solution @Shouston3 and @finnhodgkin came up with last week when dealing with #211.

[finnhodgkin]

The live version is now seeded and there are instructions in the readme 👍