removed test corpusfolder files - outfile and penntreebank.txt
Merge pull request #2 from patxu/master

files in the Brown corpus end with .pos, not .txt
Merge branch 'master' of https://github.com/irenelfeng/SummaryTweets
changed so unrecognized words get a high tf-idf score
added a bunch of comments
comments on tf_idf
resolved comment conflicts
unknown word should have numfiles as less than 1
run.sh changed
fixed conflicts in tf_idf and run.sh
added topSentences method
merged topSentences methodMerge branch 'patxu-master'
added bc3 corpus of summaries