stripe/mongoriver — pull request #7 by jeremydhoon (2013-07-22 18:10:06+00:00)
Title: Do not depend on "bson_ext" unless we are running MRI.

The `bson_ext` gem tries to build a C extension, which plays poorly with JRuby. If we're not running MRI, I'd prefer to take the performance hit in exchange for greater compatibility with more exotic Rubies.

CC: @nelhage @ebroder @gdb