First of all, thank you for your contribution! Please makes sure that these checkboxes are checked before submitting your PR, thank you!
<!-- How to use github markdown? ### checkable example - [x] checked - [ ] not checked More github Markdown info to see https://guides.github.com/features/mastering-markdown/ --> CheckList: **if** *isBugFix* **:** * [ ] Make sure that you add at least one unit test for the bug which you had fixed. **elif** *isNewFeature* **:** * [ ] Update API docs for the component. * [ ] Update/Add demo to demonstrate new feature. * [ ] Update test scripts for the feature. * [ ] Add unit tests for the feature. <!-- （请在***提交***前删除这段描述） Notes: Weex will move into Apache Software Foundation (ASF) on Feb 24 2017. Our new GitHub repo is https://github.com/apache/incubator-weex After Feb 24 2017, we only accept pull requests from https://github.com/apache/incubator-weex Thank you for your support. ---- 注意：Weex 将于 2017-02-24 迁移至 Apache 基金会 届时我们会使用新的 GitHub 仓库：https://github.com/apache/incubator-weex 并在那里继续接受大家的 pull request。 更多详情请关注：https://github.com/weexteam/article/issues/130 感谢理解和支持 --> <!-- （请在***提交***前删除这段描述） It's ***RECOMMENDED*** to submit typo fix, new demo, tiny bugfix and large feature to `master` branch. See [Branch Strategy](https://github.com/alibaba/weex/blob/dev/CONTRIBUTING.md#branch-management) for more detail. ---- 错别字修改、新 demo、较小的 bugfix、甚至较大的功能都可以直接提到 `master` 分支； 查看完整的[分支策略 (英文)](https://github.com/alibaba/weex/blob/dev/CONTRIBUTING.md#branch-management)。 --> [ Full content available at: https://github.com/apache/incubator-weex/pull/1517 ] This message was relayed via gitbox.apache.org for devnull@infra.apache.org
