updated readme

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README.md

 This class takes a sentence as input and outputs its 'happiness'. 
 
 Happiness is a categorical variables that takes values:
+
 1 when the overall sentiment of the sentence is positive
+
 -1 when the overall sentiment of the sentence is negative
+
 0 when the overall sentiment of the sentence is neutral
 
 The code uses two lexicons for sentiment computation:
 
 1) BingLiu's lexicon at http://www.cs.uic.edu/~liub/FBS/sentiment-analysis.html
+
 Please cite one of the following two papers:
 
-   Minqing Hu and Bing Liu. "Mining and Summarizing Customer Reviews."
-       Proceedings of the ACM SIGKDD International Conference on Knowledge
-       Discovery and Data Mining (KDD-2004), Aug 22-25, 2004, Seattle,
-       Washington, USA,
-   Bing Liu, Minqing Hu and Junsheng Cheng. "Opinion Observer: Analyzing
-       and Comparing Opinions on the Web." Proceedings of the 14th
-       International World Wide Web conference (WWW-2005), May 10-14,
-       2005, Chiba, Japan.
+   Minqing Hu and Bing Liu(2004). Mining and Summarizing Customer Reviews. Proceedings of
+   the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining
+   (KDD-2004), Aug 22-25, 2004, Seattle, Washington, USA.
+
+   Bing Liu, Minqing Hu and Junsheng Cheng (2005). Opinion Observer: Analyzing and Comparing Opinions on the Web.
+   Proceedings of the 14th International World Wide Web conference (WWW-2005), May 10-14, 2005, Chiba, Japan.
 
 2) MPQA lexicon
+
 Please cite:
 
 	Theresa Wilson, Janyce Wiebe and Paul Hoffmann (2005). Recognizing Contextual
@@ -30,11 +33,17 @@ Please cite:
 Example of how to use this class
 
 public void demo() throws Exception{
+
 	SentimentHandler sentimentHandler = new SentimentHandler();
+
        	String sent = "She thought she was not happy.";
+
         Pair<Integer, Integer> happ = sentimentHandler.getHappiness(sent);
+
         System.out.println("Happiness according to BingLiu Lexicon: "+happ.getFirst());
+
         System.out.println("Happiness according to MPQA Lexicon: "+happ.getSecond());
+
     }