y-ken/fluent-plugin-twitter — pull request #11 by Songmu (2014-10-30 16:27:11+00:00)
Title: require 'string/scrub' if RUBY_VERSION < '2.1'

`string-scrub` is specified in gemspec, but is not required in code.

So, I added `require` clause, and it works in my td-agent with ruby 1.9.3.