Update to allow scrivener_ecto 2.x.x and ecto 3.x.x

v2.0.0

• Relax the requirements for scrivener_ecto to allow 1.x and 2.x
  versions - thereby also allowing ecto 3.x,
  resolves issue 4

• README example without a Repo module no longer references
  a Repo module confusingly - PR

• Formatting introduced with mix format

• Linting the README.md file

• Add example in README.md of adding adapter: Ecto.Adapters.Postgres in the
  use statement when creating a Repo module as is required
  for Ecto 3+.

• Elixir 1.4+ is required for scrivener_ecto 2.x

v1.0.1

v1.0.1

[fixes]

• Cannot pass %Scrivener.Config.t into Scrivener.Repo.paginate. Change docs to reflect this.
• Add :scrivener_ecto to applications and hence quieten warnings for releases.
• bump dependencies & fix warnings for elixir 1.4.

Initial Release

• Extends the Paginate protocol to allow pagination of a list