route-me/route-me — pull request #151 by vyskocil (2011-11-06 21:36:38+00:00)
Title: Use NSOperation and NSOperationQueue to download image tiles from the web in concurent threads.

The use of NSOperation/NSOperationQueue to download image tiles from web helps to unload work from the main thread and permit a smoother map scrolling, particularly in iOS5.