update esl test case

We are from EFE team(http://efe.baidu.com/), and we writed a amd loader named ESL(https://github.com/ecomfe/esl), which licensed bsd.  ESL has been widely used in many e-business site, and www.baidu.com. We think that ESL is stable, so create this pull-request. If this pull-request is accepted, it is our pleasure.