Update PFAnalytics.h

Author: dplewis

Parse/Parse/Source/PFAnalytics.h

@@ -9,7 +9,11 @@
 
 #import <Foundation/Foundation.h>
 
-@import Bolts;
+#if __has_include(<Bolts/BFTask.h>)
+#import <Bolts/BFTask.h>
+#else
+#import "BFTask.h"
+#endif
 
 #import "PFConstants.h"