Readme doc not matching implementation

[tylor]

Using 6.1.0 and getting the error undefined method 'merge' for "image/jpeg":String (NoMethodError) in /lib/paperclip/validators.rb:48

This is working for me: validates_attachment_content_type :image, content_type: ["image/jpeg", "image/gif", "image/png"]

I think this would also work: validates_attachment :image, content_type: { content_type: ["image/jpeg", "image/gif", "image/png"] }