update docs about expandRowByClick={true}

What problem does this feature solve?

I think we can add this to Table from lastest rc-table, can enable the whole row clickable to expand, just add this api to the sample page, and developpers do not have to look for rc-table for some new apis or write some stupid code to hack. also, great work of antd.

What does the proposed API look like?

     <Table
        columns={columns}
        expandRowByClick={true} // from lastest rc-table api
        expandedRowRender={expandedRowRender}
        dataSource={data}
      />

[danedavid]

Which files have to be updated other than ant-design/components/table/index.en-US.md ? Or is it the only one ? ( somebody has to do the chinese )

[yesmeck]

@danedavid Site need deploy manually.