补充test
Merge remote-tracking branch 'upstream/dev-refactor' into dev-refactor
解决dialog用例在linux下phantom的bug, 由于width大于了768,被认为是tablet, min-width是500所以去设置dialog 400得到的宽度不是400，而是500
Merge pull request #119 from liaoxuezhi/dev-refactor

Dev refactor