Added upper & lower cut-off percentage :21-05-2014
removed jaccard_trial direcotry
Added duplicate files removal option :22-05-2014
Added jaccardian_method,use_percent,write_log in config: 26-05-2014
Made changes in moving files ,v 1.4.1 : 03-06-2014
Added support to excel output,2 stage computation  ,v 1.5.1 : 13-06-2014
Added file delete ,seperator,max count of matched article ,v1.6.1 : 18-06-2014
Added Bi-gram support ,v1.7.1 : 14-07-2014
Added word bigram support