change Ichabod::ResourceSet::Resource#to_s to print attribute and value

[jgpawletko]

Current Ichabod::ResourceSet::Resource#to_s implementation does not prefix values with the attribute name when value is not an array. e.g.,

       NYUCORE_ATTRIBUTES.map do |attribute|
          value = send(attribute)
          if value.present?
            if value.is_a? Array
              "#{attribute}: #{value.join('; ')}"
            else
              value  # <=== propose changing this line to ""#{attribute}: #{value}"
            end
          end
        end.compact.join("\n") + "\n"

Comments welcome...