title: ObjcMongoDB keypath predicate matching nsdate
body: <p>I am using objmongodb as a tool to communicate with my work's mongodb.</p>
  
  <p>i need to create a query for all docs with a field pickup.recommended equaling todays date.</p>
  
  <p>I'v tried using:</p>
  
  <pre><code>    [predicate keyPath:@"pickup.recommended" matches:[NSDate date]];
  </code></pre>
  
  <p>as well as </p>
  
  <pre><code>    [predicate keyPath:@"pickup.recommended" matches:@"2014-02-20"];
  </code></pre>
  
  <p>But all queries return zero results with that added predicate to a MongoFindRequest. And the query was working before i added that statement.</p>