thoughtbot/paperclip — pull request #1474 by porteta (2014-03-04 16:03:47+00:00)
Title: Add alias for legacy RSpec matcher deprecation

When using Rspec 3.0.0 and writing tests for validating attachment size. I get the deprecation warning:

Paperclip::Shoulda::Matchers::ValidateAttachmentSizeMatcher implements a legacy RSpec matcher
protocol. For the current protocol you should expose the failure messages
via the `failure_message` and `failure_message_when_negated` methods.