[new feature] Coupon add 'showExchangeBar' prop && add empty style (#243)

* [bugfix] Checkbox border render error in weixin browser

* [bugfix] TreeSelect dependency path error

* [bugfix] Swipe should clear autoplay timer when destroyed

* [bugfix] Optimize component dependency analyze when build style entry

* merge

* update yarn.lock

* update README.md

* update README.md

* update README.md

* update README.md

* update README.md

* [Doc] add more badges in README.md

* update README.md

* [bugfix] Address & Contact list style

* fix: contact test cases

* [bugfix] popup style missing when build style entry

* [bugfix] Search: onSearch event arguments missing

* [Doc] add demo pages

* update zan-doc@0.3.7

* fix: build entry error

* [Doc] add goods demo

* [bugfix] button primary background color

* [Doc] update doc detail

* [new feature] Coupon add 'showExchangeBar' prop && add empty style

docs/examples-docs/zh-CN/coupon.md

@@ -160,6 +160,7 @@ export default {
 | closeButtonText | 列表底部按钮文字 | `String` | 不使用优惠 | - |
 | disabledListTitle | 不可用券列表标题 | `String` | 不可用优惠 | - |
 | inputPlaceholder | 输入框文字提示 | `String` | 请输入优惠码 | - |
+| showExchangeBar | 是否展示兑换栏 | `Boolean` | `true` | - |
 
 ### CouponList Event