not compatible with qunit 2.x

[kiswap]

the optional second argument ("expected") of test method was removed from qunit 2.x
see: http://qunitjs.com/upgrade-guide-2.x/#replace-expected-argument-in-qunit-test

[AStepaniuk]

Please have a look at #13
It adds the separate file with the version compatible with QUnit 2.x
It's merged into master.

[johnbillion]

Would you mind publishing the latest version to npm please?