Added SDWebImageCompact.m to Compile sources of the SDWebImage+MKAnnotation target
Remove async calls from SDWebImageDownloader.  The operation is already run in a background thread also the async calls are unnecessary.
Merge pull request #373 from cfis/download_cleanup

More SDWebImageDownloader Cleanup
Merge pull request #340 from odanu/master

Add SDWebImageCompact.m to Compile sources of the SDWebImage+MKAnnotation target
Fix and make SDScaledImageForPath extensible
Make SDWebImageManager cache creation extensible
Merge pull request #366 from bm-i/master

Fix and make SDScaledImageForPath extensible