Add PromiseKit dependency

- Added PromiseKit dependency

Carthage/Checkouts/PromiseKit/Extensions/AVFoundation/Tests/TestAVFoundation.m

@@ -0,0 +1,17 @@
+#import "AVAudioSession+AnyPromise.h"
+@import AVFoundation;
+@import XCTest;
+
+@implementation Test_AVAudioSession_ObjC: XCTestCase
+
+- (void)test {
+    id ex = [self expectationWithDescription:@""];
+
+    [[AVAudioSession new] requestRecordPermission].then(^{
+        [ex fulfill];
+    });
+
+    [self waitForExpectationsWithTimeout:1 handler:nil];
+}
+
+@end

Carthage/Checkouts/PromiseKit/Extensions/AVFoundation/Tests/TestAVFoundation.swift

@@ -0,0 +1,24 @@
+import PMKAVFoundation
+import AVFoundation
+import PromiseKit
+import XCTest
+
+class Test_AVAudioSession_Swift: XCTestCase {
+    func test() {
+        let ex = expectation(description: "")
+
+        AVAudioSession().requestRecordPermission().done { _ in
+            ex.fulfill()
+        }
+
+        waitForExpectations(timeout: 1)
+    }
+
+    func testNotAmbiguous() {
+        let ex = expectation(description: "")
+        AVAudioSession().requestRecordPermission { _ in
+            ex.fulfill()
+        }
+        waitForExpectations(timeout: 1)
+    }
+}