fix usage example
fix usage example

jhartikainen/js-fixtures,SimenB/jasmine-jquery,beni55/jasmine-jquery,wbye/jasmine-jquery,badunk/js-fixtures,almazhou/jQueryTest,willprice/jasmine-jquery,velesin/jasmine-jquery,SimenB/jasmine-jquery,FernandoMueller/jasmine-jquery,wbye/jasmine-jquery,pivotal/jasmine-jquery,jhartikainen/js-fixtures,asabaylus/js-fixtures,pivotal/jasmine-jquery,beni55/jasmine-jquery,willprice/jasmine-jquery,asabaylus/js-fixtures,FernandoMueller/jasmine-jquery