responsive 默认值是 true 而不是 false

[zhuanghongji]

看了 ./components/Button/index.js 下的代码，发现 responsive 默认值为 true，跟文档描述有差异。

export default class Button extends React.Component {
    static propTypes = {
    };
    static defaultProps = {
        type: 'default',
        size: 'md',
        style: {},
        textColorReverse: false,
        responsive: true,
        onPress: () => {},
    };
    // ....
}