Good news everyone! Rails 4.2 doesn't ship with this.

The README has been rewritten to reflect this.

(Disregard whatever you may have read in commits previous to this one.)
Merge pull request #4 from kaspth/flip-default

Good news everyone! Rails 4.2 doesn't ship with this.
Set the sanitizer vendor
Load sanitizer_helper before this gem
Set test order to random