Update README.md

Author: YajanaRao

README.md

@@ -319,15 +319,15 @@ The following constants are available on the `RNFS` export:
 - `ExternalDirectoryPath` (`String`) The absolute path to the external files, shared directory (android only)
 - `ExternalStorageDirectoryPath` (`String`) The absolute path to the external storage, shared directory (android only)
 
-IMPORTANT: when using `ExternalStorageDirectoryPath` it's necessary to request permissions (on Android) to read and write on the external storage, here an example: [React Native Offical Doc] (https://facebook.github.io/react-native/docs/permissionsandroid)
+IMPORTANT: when using `ExternalStorageDirectoryPath` it's necessary to request permissions (on Android) to read and write on the external storage, here an example: [React Native Offical Doc](https://facebook.github.io/react-native/docs/permissionsandroid)
 
 ### `readDir(dirpath: string): Promise<ReadDirItem[]>`
 
 Reads the contents of `path`. This must be an absolute path. Use the above path constants to form a usable file path.
 
 The returned promise resolves with an array of objects with the following properties:
 
-```
+```js
 type ReadDirItem = {
   ctime: date;     // The creation date of the file (iOS only)
   mtime: date;     // The last modified date of the file
@@ -346,7 +346,7 @@ Reads the contents of `dirpath ` in the Android app's assets folder.
 
 The returned promise resolves with an array of objects with the following properties:
 
-```
+```js
 type ReadDirItem = {
   name: string;     // The name of the item
   path: string;     // The absolute path to the item
@@ -369,7 +369,7 @@ Node.js style version of `readDir` that returns only the names. Note the lowerca
 Stats an item at `filepath`. If the `filepath` is linked to a virtual file, for example Android Content URI, the `originalPath` can be used to find the pointed file path.
 The promise resolves with an object with the following properties:
 
-```
+```js
 type StatResult = {
   path:            // The same as filepath argument
   ctime: date;     // The creation date of the file
@@ -510,7 +510,7 @@ Create a directory at `filepath`. Automatically creates parents and does not thr
 
 ### `downloadFile(options: DownloadFileOptions): { jobId: number, promise: Promise<DownloadResult> }`
 
-```
+```js
 type DownloadFileOptions = {
   fromUrl: string;          // URL to download file from
   toFile: string;           // Local filesystem path to save the file to
@@ -528,7 +528,7 @@ type DownloadFileOptions = {
   backgroundTimeout?: number // Maximum time (in milliseconds) to download an entire resource (iOS only, useful for timing out background downloads)
 };
 ```
-```
+```js
 type DownloadResult = {
   jobId: number;          // The download job ID, required if one wishes to cancel the download. See `stopDownload`.
   statusCode: number;     // The HTTP status code
@@ -540,7 +540,7 @@ Download file from `options.fromUrl` to `options.toFile`. Will overwrite any pre
 
 If `options.begin` is provided, it will be invoked once upon download starting when headers have been received and passed a single argument with the following properties:
 
-```
+```js
 type DownloadBeginCallbackResult = {
   jobId: number;          // The download job ID, required if one wishes to cancel the download. See `stopDownload`.
   statusCode: number;     // The HTTP status code
@@ -551,7 +551,7 @@ type DownloadBeginCallbackResult = {
 
 If `options.progress` is provided, it will be invoked continuously and passed a single argument with the following properties:
 
-```
+```js
 type DownloadProgressCallbackResult = {
   jobId: number;          // The download job ID, required if one wishes to cancel the download. See `stopDownload`.
   contentLength: number;  // The total size in bytes of the download resource
@@ -587,7 +587,7 @@ Check if the the download job with this ID is resumable with `resumeDownload()`.
 
 Example:
 
-```
+```js
 if (await RNFS.isResumable(jobId) {
     RNFS.resumeDownload(jobId)
 }
@@ -603,7 +603,7 @@ Read more about background downloads in the [Background Downloads Tutorial (iOS)
 
 `options` (`Object`) - An object containing named parameters
 
-```
+```js
 type UploadFileOptions = {
   toUrl: string;            // URL to upload file to
   binaryStreamOnly?: boolean// Allow for binary data stream for file to be uploaded without extra headers, Default is 'false'
@@ -616,7 +616,7 @@ type UploadFileOptions = {
 };
 
 ```
-```
+```js
 type UploadResult = {
   jobId: number;        // The upload job ID, required if one wishes to cancel the upload. See `stopUpload`.
   statusCode: number;   // The HTTP status code
@@ -627,7 +627,7 @@ type UploadResult = {
 
 Each file should have the following structure:
 
-```
+```js
 type UploadFileItem = {
   name: string;       // Name of the file, if not defined then filename is used
   filename: string;   // Name of file
@@ -638,15 +638,15 @@ type UploadFileItem = {
 
 If `options.begin` is provided, it will be invoked once upon upload has begun:
 
-```
+```js
 type UploadBeginCallbackResult = {
   jobId: number;        // The upload job ID, required if one wishes to cancel the upload. See `stopUpload`.
 };
 ```
 
 If `options.progress` is provided, it will be invoked continuously and passed a single object with the following properties:
 
-```
+```js
 type UploadProgressCallbackResult = {
   jobId: number;                      // The upload job ID, required if one wishes to cancel the upload. See `stopUpload`.
   totalBytesExpectedToSend: number;   // The total number of bytes that will be sent to the server
@@ -664,7 +664,7 @@ Abort the current upload job with this ID.
 
 Returns an object with the following properties:
 
-```
+```js
 type FSInfoResult = {
   totalSpace: number;   // The total amount of storage space on the device (in bytes).
   freeSpace: number;    // The amount of available storage space on the device (in bytes).
@@ -696,7 +696,7 @@ Background downloads in iOS require a bit of a setup.
 
 First, in your `AppDelegate.m` file add the following:
 
-```
+```js
 #import <RNFSManager.h>
 
 ...