Require Set stdlib.
Increment build number.
update documentation for Reclassifier::Bayes
add note about Madeleine
Merge pull request #2 from tshieh/master

update documentation for Reclassifier::Bayes, add note about Madeleine
Add gsl gem as a dependency
Add require statement
Merge pull request #3 from Diagnosia/add-gsl-dependency

Add gsl gem as a dependency
Refactor Hash.new
Merge pull request #4 from chezou/refactor-hash

Refactor Hash.new
Merge remote-tracking branch 'upstream/master'