Recaptcha::RecaptchaError in Account#signup+discussion

@anonymous:  For now you need to get your own recaptcha account to use recaptcha, it's free, just sign up on their site.  they'll give you public/private keys which you add to your configuration (either config/environment.rb or config/wagn.rb)   like so:

ENV['RECAPTCHA_PUBLIC_KEY']  = 'your-public-key-goes-here'

ENV['RECAPTCHA_PRIVATE_KEY'] = 'your-private-key-goes-here'