Merge pull request #733 from RickCole21/master

remark classname调整下、验证问题修复

src/renderers/Remark.tsx

@@ -76,6 +76,7 @@ class Remark extends React.Component<RemarkProps> {
           classPrefix={ns}
           classnames={cx}
           tooltip={filterContents(tooltip || content, data)}
+          tooltipClassName={tooltip && tooltip.tooltipClassName}
           placement={(tooltip && tooltip.placement) || placement}
           rootClose={(tooltip && tooltip.rootClose) || rootClose}
           trigger={(tooltip && tooltip.trigger) || trigger}

src/utils/validations.ts

@@ -259,7 +259,7 @@ export function validate(
 
   rules &&
     Object.keys(rules).forEach(ruleName => {
-      if (!rules[ruleName]) {
+      if (!isExisty(rules[ruleName]) || isEmpty(rules[ruleName])) {
         return;
       } else if (typeof validations[ruleName] !== 'function') {
         throw new Error('Validation `' + ruleName + '` not exists!');