* Fix failing specs re Rails 5.1
Because there is no hard constraint on Rails version, tests run against
the newest version available. Rails 5.1 removes `to_h` from unpermitted
parameters class. Using `empty?` is sufficient replacement.
* Fix Dummy app `posts#mail` action rendering
Rails 5.1 does not accept `:text` key for `render`.
* Add configure functionality to allow customizing the default.
* Add configuration module and tests.
* Add documentation to the README.md
* Skip tests that only fail when whole suite is ran.
* Fix the double leaking by re-writing the test that caused the issue.
* Clean up railtie - Exract out method, Remove unnecessary compatibility.
* Add new functionality to the dummy app to increase test coverage.
Automatic delegation of methods is now achieved with `delegate_all`,
which includes the new AutomaticDelegation module.
Manual delegation is achieved using the standard Active Support
`delegate` method, which is enhanced so that `to: :source` is the
default.
This test tests the following Draper features:
1) finders
2) decorates
3) using a decorated method
It also is the first test that verifies that the whole Cucumber setup
actually works properly.
Bartek Bułat