* Upgrade to vue 2.1.0

* Table: support scoped slots, resolve #1763, #1161

* Update vue version

* fix test

* fix test

* Update doc

* Fix english docs

* 修复 checkbox 的 focus 变量找不到的bug

* 修复 checkbox 的 focus 变量找不到的bug

This reverts commit 87b13bf0e07c0ce8ac183ecd2020088c26a81de0.

When the width of parent container is too narrow, text in tag will be
break into lines.
當父容器寬度不足時，Tag 文字會產生換行的現象