添加navigator
优化iscroll
纠正一个错误
添加navigator测试用例
add navigator to test target
Merge pull request #128 from liaoxuezhi/dev-refactor

Dev refactor
优化测试用例
Merge pull request #129 from liaoxuezhi/dev-refactor

优化测试用例
Merge remote-tracking branch 'remotes/orignal/dev-refactor' into dev-refactor
case 用例结尾销毁元素；加延迟
去掉pagewipe用例，progressbar在某些浏览器上要加延迟
imglazyload 用例加延迟
fix补充用例，提高覆盖率
补充用例 imglazyload ,提高覆盖率