Add userInfo on SDWebImageDownloader.m

@@ -19,12 +19,15 @@ extern NSString *const SDWebImageDownloadStopNotification;
     id<SDWebImageDownloaderDelegate> delegate;
     NSURLConnection *connection;
     NSMutableData *imageData;
+	id userInfo;
 }
 
 @property (nonatomic, retain) NSURL *url;
 @property (nonatomic, assign) id<SDWebImageDownloaderDelegate> delegate;
 @property (nonatomic, retain) NSMutableData *imageData;
+@property (nonatomic, retain) id userInfo;
 
++ (id)downloaderWithURL:(NSURL *)url delegate:(id<SDWebImageDownloaderDelegate>)delegate userInfo:(id)userInfo;
 + (id)downloaderWithURL:(NSURL *)url delegate:(id<SDWebImageDownloaderDelegate>)delegate;
 - (void)start;
 - (void)cancel;

@@ -16,12 +16,18 @@ NSString *const SDWebImageDownloadStopNotification = @"SDWebImageDownloadStopNot
 @end
 
 @implementation SDWebImageDownloader
-@synthesize url, delegate, connection, imageData;
+@synthesize url, delegate, connection, imageData, userInfo;
 
 #pragma mark Public Methods
 
 + (id)downloaderWithURL:(NSURL *)url delegate:(id<SDWebImageDownloaderDelegate>)delegate
 {
+	return [[self class] downloaderWithURL:url delegate:delegate userInfo:nil];
+}
+
++ (id)downloaderWithURL:(NSURL *)url delegate:(id<SDWebImageDownloaderDelegate>)delegate userInfo:(id)userInfo
+{
+
     // Bind SDNetworkActivityIndicator if available (download it here: http://github.com/rs/SDNetworkActivityIndicator )
     // To use it, just add #import "SDNetworkActivityIndicator.h" in addition to the SDWebImage import
     if (NSClassFromString(@"SDNetworkActivityIndicator"))
@@ -38,6 +44,7 @@ NSString *const SDWebImageDownloadStopNotification = @"SDWebImageDownloadStopNot
     SDWebImageDownloader *downloader = [[[SDWebImageDownloader alloc] init] autorelease];
     downloader.url = url;
     downloader.delegate = delegate;
+	downloader.userInfo = userInfo;
     [downloader performSelectorOnMainThread:@selector(start) withObject:nil waitUntilDone:YES];
     return downloader;
 }
@@ -129,6 +136,7 @@ NSString *const SDWebImageDownloadStopNotification = @"SDWebImageDownloadStopNot
     [url release], url = nil;
     [connection release], connection = nil;
     [imageData release], imageData = nil;
+	[userInfo release], userInfo = nil;
     [super dealloc];
 }
 

@@ -6,6 +6,8 @@
  * file that was distributed with this source code.
  */
 
+#import <UIKit/UIKit.h>
+
 @class SDWebImageDownloader;
 
 @protocol SDWebImageDownloaderDelegate <NSObject>