README.md in pollster-0.2.0 vs README.md in pollster-0.2.1

@@ -36,11 +36,11 @@
 
 Calculate the margin between Obama and Romney from a recent general election poll
 
     poll = Poll.where(:chart => '2012-general-election-romney-vs-obama').first
     responses = poll.questions.detect { |question| question.chart == '2012-general-election-romney-vs-obama' }.responses
-    obama = responses.detect { |response| response.choice == "Obama" }
-    romney = responses.detect { |response| response.choice == "Romney" }
+    obama = responses.detect { |response| response[:choice] == "Obama" }
+    romney = responses.detect { |response| response[:choice] == "Romney" }
     obama[:value] - romney[:value]
 
 See the methodology used in recent polls about the Affordable Care Act
 
     chart = Chart.find 'us-health-bill'