[new feature] add i18n support (#310)

* fix: Tabbar icon line-height

* [new feature] progress add showPivot prop

* [new feature] TabItem support vue-router

* [new feature] update document header style

* [Doc] add toast english ducoment

* [new feature] add i18n support

* feat: Extract demos from markdown

* feat: Base components demos

* [new feature] complete demo extract & translate

* [fix] text cases

* fix: add deepAssign test cases

* fix: changelog detail

* [new feature] AddressEdit support i18n

test/unit/specs/popup.spec.js

@@ -79,7 +79,7 @@ describe('Popup', () => {
       setTimeout(() => {
         expect(wrapper.element.style.display).to.equal('none');
         done();
-      }, 300);
+      }, 500);
     }, 300);
   });