title: Match string like ?$skip=[0-9]
body: <p>I want to match oData string like so <code>^\$skip=[0-9]$</code> to match things like <code>$skip=3</code> and remove them. My regex is probably wrong but I don't know what to try next. I've already tried various things like wrapping it in <code>[]</code> and so on.</p>
  
  <p>Here is an online example: <a href="http://www.regexr.com/392m2" rel="nofollow">http://www.regexr.com/392m2</a></p>