title: React input type number with comma as decimal separator
body: <p>I tried to set value in 'German' locale to react input number field as below;</p>
  
  <p></p>
  
  <p>My value got reset and gives below warning in chrome console. </p>
  
  <p>'The specified value "2345,00" is not a valid number. The value must match to the following regular expression: -?(\d+|\d+.\d+|.\d+)([eE][-+]?\d+)?'</p>
  
  <p><a href="https://i.stack.imgur.com/w5QM3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/w5QM3.png" alt="enter image description here"></a></p>
  
  <p>I am using react 15.6.1 It seems ReactDOMInput doesn't support comma as decimal separator. Does anyone have solution for this issue?</p>