celluloid/celluloid-io — pull request #38 by bkerley (2013-01-18 17:12:52+00:00)
Title: Create correct << method that returns self instead of total_written

Consult http://rdoc.info/stdlib/core/IO#%3C%3C-instance_method vs. http://rdoc.info/stdlib/core/IO#write-instance_method