update ios xcode preject;

ios/RCTPushy/HDiffPatch/HDiffPatch.m

@@ -0,0 +1,35 @@
+//
+//  BSDiff.m
+//  RCTPushy
+//
+//  Created by HouSisong, All rights reserved.
+//
+
+#import "HDiffPatch.h"
+#include "../../../android/jni/hpatch.h"
+
+@implementation HDiffPatch
+
++ (BOOL)hdiffPatch:(NSString *)patch
+            origin:(NSString *)origin
+     toDestination:(NSString *)destination
+{
+    if (![[NSFileManager defaultManager] fileExistsAtPath:patch]) {
+        return NO;
+    }
+    if (![[NSFileManager defaultManager] fileExistsAtPath:origin]) {
+        return NO;
+    }
+    
+    if ([[NSFileManager defaultManager] fileExistsAtPath:destination]) {
+        [[NSFileManager defaultManager] removeItemAtPath:destination error:nil];
+    }
+    
+    int err = hpatch_by_file([origin UTF8String], [destination UTF8String], [patch UTF8String]);
+    if (err) {
+        return NO;
+    }
+    return YES;
+}
+
+@end