Add PromiseKit dependency

- Added PromiseKit dependency

Carthage/Checkouts/PromiseKit/Extensions/Social/Sources/SLRequest+AnyPromise.m

@@ -0,0 +1,51 @@
+//
+//  Created by merowing on 09/05/2014.
+//
+//
+//
+
+#import <PromiseKit/PromiseKit.h>
+#import "SLRequest+AnyPromise.h"
+
+#if COCOAPODS
+#import "NSURLSession+AnyPromise.h"
+#else
+#import <PMKFoundation/NSURLSession+AnyPromise.h>
+#endif
+
+@implementation SLRequest (PromiseKit)
+
+- (AnyPromise *)promise {
+    return [AnyPromise promiseWithResolverBlock:^(PMKResolver resolve) {
+        [self performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
+
+            assert(![NSThread isMainThread]);
+
+            if (error)
+                return resolve(error);
+
+            NSInteger const statusCode = urlResponse.statusCode;
+            if (statusCode < 200 || statusCode >= 300) {
+                id userInfo = [NSMutableDictionary new];
+                userInfo[PMKURLErrorFailingURLResponseKey] = urlResponse;
+                userInfo[NSLocalizedDescriptionKey] = [NSHTTPURLResponse localizedStringForStatusCode:statusCode];
+
+                if (responseData) {
+                    id str = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
+                    userInfo[PMKURLErrorFailingStringKey] = str;
+                }
+
+                resolve([NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorBadServerResponse userInfo:userInfo]);
+            }
+            else if (PMKHTTPURLResponseIsJSON(urlResponse)) {
+                id err = nil;
+                id json = [NSJSONSerialization JSONObjectWithData:responseData options:PMKJSONDeserializationOptions error:&err];
+                resolve(err ?: PMKManifold(json, urlResponse, responseData));
+            } else {
+                resolve(PMKManifold(responseData, urlResponse, responseData));
+            }
+        }];
+    }];
+}
+
+@end