title: Only display future dates in a UITableView
body: <p>I'm new to Objective-C and I have a <code>UITableView</code> that is populated by an <code>NSArray</code> of <code>NSDictionaries</code> (one for each event). The array is created by parsing an .ics calendar file which contains past and future events but I only want future events in my <code>UITableView</code>. </p>
  
  <p>The dates exist as a child <code>NSDictionary</code> with 'Year', 'Month' and 'Day' keys, as pulled from the .ics file by my parser.</p>
  
  <p>I'm guessing I need to create a new array, only copying in the events (<code>NSDictionary</code>)  who's date is later than the current date but I have no idea how to do it.
  How would one go about such a thing?</p>