Fix ASCII encoding readFile

src/ios/RNFetchBlobFS.m

                     [resultArray addObject:[NSNumber numberWithChar:bytes[i]]];
                 }
                 if(resolve != nil)
-                    resolve(@[resultArray]);
+                    resolve(resultArray);
             }
         }];
     }

src/package.json

 {
   "name": "react-native-fetch-blob",
-  "version": "0.8.0-alpha.6",
+  "version": "0.8.0",
   "description": "A module provides upload, download, and files access API. Supports file stream read/write for process large files.",
   "main": "index.js",
   "scripts": {