# File lib/picnic/authentication.rb, line 87
      def read_credentials
        if d = %w{REDIRECT_X_HTTP_AUTHORIZATION X-HTTP_AUTHORIZATION HTTP_AUTHORIZATION}.inject([]) \
          { |d,h| @env.has_key?(h) ? @env[h].to_s.split : d }
          u,p = ::Base64.decode64(d[1]).split(':')[0..1] if d[0] == 'Basic'
          return {:username => u, :password => p}
        end
      end