Added method to SDWebImageManager to check if an image exists in either the disk OR the memory cache
Create NSOperation when start operation.
Method getDiskCount returns NSUInteger.
Overload -setImageWithURL to delay setting of placeholder image until after loading
Moved the delay placeholder flag to SDWebImageOptions
Updated bitwise operator to correctly find option if more than 1 are included
Wrapped placeholder check in parens to work with bitwise
Adds -[SDWebImageManager saveImageToCache:forURL:] method
add a suspension method to image downloaders
Merge pull request #734 from soundcloud/master

add a suspension method to image downloaders
If NSURLConnection response statusCode not valid (e.g. 404) , downloader never stops its runloop and hangs the operation queue
Merge pull request #735 from nickhingston/pullRequestBranch

If NSURLConnection response statusCode not valid (e.g. 404) , downloader...
Fix build on Xcode6
Merge pull request #737 from openresearch/master

Fix build on Xcode6
Synthesize `executing` and `finished` properties.

It wouldn't build on Xcode 6 otherwise.
Fix getter names. Fixes commit: 097b502eae

The getters of the properties “executing” and
“finished” both use custom getter names.

097b502eae implemented the wrong getter names
without the “is” prefix.
Merge pull request #742 from openresearch/master

Fix getter names. Fixes commit: 097b502eae
fixed SDWebImageRefreshCached bug for large images
Merge pull request #741 from martinblech/master

Synthesize `executing` and `finished` properties.
Merge pull request #744 from Pei116/master

fixed SDWebImageRefreshCached bug for large images
Merge pull request #732 from dchohfi/master

#725 adding completition block when removing image from cache