bump to 0.9.3

package.json

 {
   "name": "fetchblob-dev",
-  "version": "0.9.2",
+  "version": "0.9.3",
   "private": true,
   "scripts": {
     "start": "node node_modules/react-native/local-cli/cli.js start",

src/android/src/main/java/com/RNFetchBlob/RNFetchBlobBody.java

         return mime;
     }
     
-    @Override
-    public long contentLength() {
-        return contentLength;
-    }
-    
     @Override
     public void writeTo(BufferedSink sink) {
         try {

src/package.json

 {
   "name": "react-native-fetch-blob",
-  "version": "0.9.2",
+  "version": "0.9.3",
   "description": "A module provides upload, download, and files access API. Supports file stream read/write for process large files.",
   "main": "index.js",
   "scripts": {