mbleigh/acts-as-taggable-on — pull request #616 by harrykiselev (2014-12-09 11:41:17+00:00)
Title: Update README.md

Default limit is 20.
https://github.com/mbleigh/acts-as-taggable-on/blob/1c257ad9f69e7c54fa6615160238ff929d23ba9f/lib/acts_as_taggable_on/tag.rb#L23-L24