#244 #243 Replace condition of RN40 in headers

src/ios/RNFetchBlob/RNFetchBlob.h

 #define RNFetchBlob_h
 
 
-#ifdef RN040_IMPORT
+#ifdef __has_include(<React/RCTBridge.h>)
 #import <React/RCTLog.h>
 #import <React/RCTRootView.h>
 #import <React/RCTBridge.h>

src/ios/RNFetchBlobFS.h

 #import "RNFetchBlob.h"
 
 #import <Foundation/Foundation.h>
-#ifdef RN040_IMPORT
+#ifdef __has_include(<React/RCTBridgeModule.h>)
 #import <React/RCTBridgeModule.h>
 #else
 #import "RCTBridgeModule.h"

src/ios/RNFetchBlobFS.m

 #import "IOS7Polyfill.h"
 @import AssetsLibrary;
 
-#ifdef RN040_IMPORT
+#ifdef __has_include(<React/RCTBridge.h>)
 #import <React/RCTBridge.h>
 #import <React/RCTEventDispatcher.h>
 #else

src/ios/RNFetchBlobNetwork.h

 #import "RNFetchBlobProgress.h"
 #import "RNFetchBlobFS.h"
 
-#ifdef RN040_IMPORT
+#ifdef __has_include(<React/RCTBridgeModule.h>)
 #import <React/RCTBridgeModule.h>
 #else
 #import "RCTBridgeModule.h"

src/ios/RNFetchBlobNetwork.m

 #import <CommonCrypto/CommonDigest.h>
 #import "RNFetchBlobProgress.h"
 
-#ifdef RN040_IMPORT
+#ifdef __has_include(<React/RCTBridge.h>)
 #import <React/RCTRootView.h>
 #import <React/RCTLog.h>
 #import <React/RCTEventDispatcher.h>

src/ios/RNFetchBlobReqBuilder.m

 #import "RNFetchBlobFS.h"
 #import "IOS7Polyfill.h"
 
-#ifdef RN040_IMPORT
+#ifdef __has_include(<React/RCTLog.h>)
 #import <React/RCTLog.h>
 #else
 #import "RCTLog.h"