priv/repo/migrations/20170629183404_add_unique_index_on_github_id_to_github_app_installations.exs
defmodule CodeCorps.Repo.Migrations.AddUniqueIndexOnGithubIdToGithubAppInstallations do
use Ecto.Migration
def change do
create unique_index(:github_app_installations, :github_id)
end
end