Parametrized the Sentiment Data folder for the Senti Strength

with a default and a couple of checks
update pom to new version of stratopshere : 0.4 Ozone
Removed old annotation for Cardinality, updated annotation for ConstantFields
Converted to static builder() method for ReduceContract as per ozone 0.4

now needs testing
Now PACT classes are Serializable as per Strato 0.4
correct wrong configuration of input data folder SentiData
activated log

should be configurable later
correct sample commands
Passed configuration parameter to SentiStrengthWrapper through SentimentAnalysisMap configuration
updates commands
ignore external libs
added pact for selecting possible spam tweets
debugging sentiment analysis map
upgraded to stratosphere 4.0 final
updated bug fix on sentistrength integration
updated pom file for new version of stratosphere
add new property to MANIFEST for Program-Class along with previous Pact-Assembler-Class
updated gitignore for stratosphere binary
typos
optimise flow to extract users before the JOIN of tweets with polarities