updated ios references, added docs & tests

src/ios/CDVFileTransfer.h

@@ -18,7 +18,7 @@
  */
 
 #import <Foundation/Foundation.h>
-#import "CDVPlugin.h"
+#import <Cordova/CDVPlugin.h>
 
 enum CDVFileTransferError {
     FILE_NOT_FOUND_ERR = 1,

src/ios/CDVFileTransfer.m

@@ -17,7 +17,9 @@
  under the License.
  */
 
-#import "CDV.h"
+#import <Cordova/CDV.h>
+#import "CDVFileTransfer.h"
+#import "CDVFile"
 
 #import <AssetsLibrary/ALAsset.h>
 #import <AssetsLibrary/ALAssetRepresentation.h>