title: encodeURIComponent equivalent object-c
body: <p>I'm having trouble googling this.</p>
  
  <p>Does Objective-C have an equivalent method for encoding URI Component?</p>
  
  <p><a href="http://www.w3schools.com/jsref/jsref_encodeuricomponent.asp" rel="nofollow">http://www.w3schools.com/jsref/jsref_encodeuricomponent.asp</a></p>
  
  <p>This seems to be a very common use case but I can't find any documentation about it in Objective-C.</p>
  
  <p>Thanks.</p>