Converted latin1 encoding to UTF-8.
Add instructions for set up.
Fix whitespace
Improve English tweet detection with a few rules
Add positive/negative words for each language
Implement simple sentiment classifier for tweets

Based on positive/negative words counts.
Extend classes/traits for PolarityTermStreamer

Also adds a line to the summary output in PolarityStatusListener to
display the percentage of polar tweets that were marked positive.
Extend classes/traits for PolarityLocationStreamer
Add English bad word list

Source: https://www.cs.cmu.edu/~biglou/resources/
Add English streamers that filter out bad tweets

An English tweet is "bad" if it contains a bad word.
Add SafeEnglishTermStreamer[Debug]
Merge branch 'phase2' - Phase 2 of project