Merge pull request #4 from jeantimex/swift-2.3

Migrate to swift 2.3.

Author: jeantimex

ios-swift-collapsible-table-section.xcodeproj/project.pbxproj

@@ -99,6 +99,7 @@
 				TargetAttributes = {
 					0A908DEA1CFCAA9200470F33 = {
 						CreatedOnToolsVersion = 7.3.1;
+						LastSwiftMigration = 0800;
 					};
 				};
 			};
@@ -260,6 +261,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "su.ios-swift-collapsible-table-section";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -272,6 +274,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "su.ios-swift-collapsible-table-section";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};

ios-swift-collapsible-table-section/CollapsibleTableViewController.swift

@@ -9,16 +9,14 @@
 import UIKit
 
 extension UIView {
-    func rotate(toValue: CGFloat, duration: CFTimeInterval = 0.2, completionDelegate: AnyObject? = nil) {
+    func rotate(toValue: CGFloat, duration: CFTimeInterval = 0.2) {
         let rotateAnimation = CABasicAnimation(keyPath: "transform.rotation")
+
         rotateAnimation.toValue = toValue
         rotateAnimation.duration = duration
         rotateAnimation.removedOnCompletion = false
         rotateAnimation.fillMode = kCAFillModeForwards
-        
-        if let delegate: AnyObject = completionDelegate {
-            rotateAnimation.delegate = delegate
-        }
+
         self.layer.addAnimation(rotateAnimation, forKey: nil)
     }
 }