Hook into ActiveModel errors attribute

[calebperkins]

A nifty feature Ambethia's Recaptcha gem supports is the ability to add an error to an object if the recaptcha is invalid, like so:

 if verify_recaptcha(:model => @post, :message => "Oh! It's error with reCAPTCHA!") && @post.save
    # some logic

[achiurizo]

hm yes this seems useful, i'll look into it =)