Cleanup context handling and IOS API

kraken_ios/KrakenView.h

@@ -0,0 +1,25 @@
+//
+//  KrakenView.h
+//  Kraken
+//
+//  Created by Kearwood Gilbert on 2017-04-27.
+//  Copyright © 2017 Kearwood Software. All rights reserved.
+//
+class KRContext;
+class KRScene;
+
+@protocol KrakenViewDelegate <NSObject>
+@optional
+- (void)preRender:(KRContext *)context withDeltaTime: (CFTimeInterval)deltaTime;
+- (void)postRender:(KRContext *)context withDeltaTime: (CFTimeInterval)deltaTime;
+@end
+
+@interface KrakenView : UIView
+
+@property (nonatomic, weak) IBOutlet id <KrakenViewDelegate> delegate;
+@property (nonatomic, assign) KRScene *scene;
+
+- (void)startAnimation;
+- (void)stopAnimation;
+
+@end