def to_xml
			result_string = String.new
			result_string << "<results>\n"
			@results.each do |result|
				result_string << "\t<vtresult>\n"
				RESULT_FIELDS.each{|field|
					result_string << "\t\t<#{field.to_s}>#{result[field]}</#{field.to_s}>\n" unless field == :permalink and result['permalink'].nil?
				}
				result_string << "\t</vtresult>\n"
			end if @results != nil
			result_string << "</results>\n"

			result_string
		end
def to_xml
			result_string = String.new
			result_string << "<results>\n"
			@results.each do |result|
				result_string << "\t<vtresult>\n"
				RESULT_FIELDS.each{|field|
					result_string << "\t\t<#{field.to_s}>#{result[field]}</#{field.to_s}>\n" unless field == :permalink and result['permalink'].nil?
				}
				result_string << "\t</vtresult>\n"
			end if @results != nil
			result_string << "</results>\n"

			result_string
		end
Outputs the result to XML

 @return [String] XML representation of the result