title: InputNumber for a currency input?
body: <p>I need a currency amount input. Is there anyway to customize the InputNumber to support things like commas (',') or $?</p>
  
  <p>Similar to these:</p>
  
  <p><a href="http://leonardowf.github.io/react-simple-currency/" rel="nofollow noreferrer">http://leonardowf.github.io/react-simple-currency/</a></p>
  
  <p><a href="https://github.com/jsillitoe/react-currency-input" rel="nofollow noreferrer">https://github.com/jsillitoe/react-currency-input</a></p>
  
  <p>I'm using form and InputNumber right now but it is hard to read (for the user) without at least the commas per thousand:</p>
  
  <pre><code>&lt;Col span='24'&gt;
     &lt;FormItem label='Original Investment'&gt;
           {getFieldDecorator('originalInvestment', {
             rules: [{ required: true, message: 'Please input your Investment!' }],
             initialValue: 100000000
           })(
              &lt;InputNumber min={100000000} max={10000000000} /&gt;
           )}
     &lt;/FormItem&gt;
  &lt;/Col&gt;
  </code></pre>