yhat/ggplot — pull request #336 by lapointexavier (2014-07-02 04:14:06+00:00)
Title: Fixing a typo in the exception message. Fixes #335

Fixing a small typo in the exception message.

Note: I forgot to create a bugfix branch .. is it ok to commit directly on master for such a small thing?

Ref: https://github.com/yhat/ggplot/issues/335#issuecomment-47712170