title: MaskInput number format show dash (-) instead of zero
body: <p>Want to format my number value if number is zero then should show dash ('-') sign instead of zero. what would be the format or MaskInput?</p>
  
  <p>e.g.:</p>
  
  <pre><code>========================================
  MyNumberFormatted      MyNumberNoFormat
  ========================================
         -                     0
         5                     5
         -                     0
         1                     1
  ========================================
  </code></pre>