Fixed score.test.pl
Added new scoring plugin and a new text (the Ibis of Ovid).
Changed .gitignore file
Added a topic modelling score module
Modified score.test.pl to pass along TOKEN_ID and added Topic-modeling and Singpost modules
Added bigram_freq.pl and updated it and index_multi.pl to accept a limited list of texts
Expanded the Pod of several scripts
merge score_test