combined class don't include csvopen no more
Merge branch 'master' of https://github.com/NLPG11/sentiments
Merge branch 'master' of https://github.com/NLPG11/sentiments
Merge branch 'master' of https://github.com/NLPG11/sentiments
sFeatures up to 50
Merge branch 'master' of https://github.com/NLPG11/sentiments