Rubocop - Enforce PostgreSQL Cursor usage

Enforces the use of each_instance over find_each, so that all batching is done with the postgresql_cursor gem.

Supports auto-correct!

Add this line to your application's Gemfile:

gem 'rubocop-postgresql_cursor'

And then execute:

$ bundle

Add the following line to rubocop.yml:

require:
 - rubocop-postgresql_cursor

1. Fork it ( https://github.com/tijmenb/rubocop-postgres_cursor/fork )
2. Create your feature branch (git checkout -b feature/my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin feature/my-new-feature)
5. Create a new Pull Request