Added token configurations.
Merge branch 'panos/add-tokens'
added new line.
Added Config README
Added Crawler/Data README.
Merge branch 'add-structure-readmes'
Merge branch 'master' of https://github.com/PanosSakkos/TrendClassifier into dimitris/add_tweets_preprocessor
Changes..
Fixed tokenizer
Fixed urls and hashtags
https
Merge branch 'dimitris/add_tweets_preprocessor' of https://github.com/PanosSakkos/TrendClassifier into dimitris/add_tweets_preprocessor