andrew/split — pull request #73 by apsoto (2012-08-29 23:46:42+00:00)
Title: Issue #72 - fix reseting of experiment in session

The issue was that versioned experiments had a different key than
non-versioned experiments. The experiment name was equal to the
experiment key for non-versioned experiments. Experiment#key
wraps this logic. However, the Helper#finished method
was using the experiment_name parameter, instead of the Experiment#key
method.