Merge pull request #9 from frangeris/master

Improve documentation (README.md)

Author: fchasen

README.md

@@ -54,9 +54,12 @@ server.start().then((url) => {
 server.stop();
 ```
 
-`StaticServer` serves from the document directory or takes an optional absolute path to serve from.
+`StaticServer` serves from the document directory (default) or takes an optional absolute path to serve from.
+
 For instance, using [react-native-fs](https://github.com/johanneslumpe/react-native-fs) you can get the document directory and specify a directory from there.
 
+#### Default (document directory)
+
 ```javascript
 import StaticServer from 'react-native-static-server';
 import RNFS from 'react-native-fs';
@@ -67,6 +70,30 @@ let path = RNFS.DocumentDirectoryPath + '/www';
 let server = new StaticServer(0, path);
 ```
 
+#### Custom folder (iOS)
+
+##### Create the folder for static files
+
+Create a folder in your project's top-level directory (usually next to your node_modules and index.js file), and put the files you want to access over http in there.
+
+##### Add folder (static files) to XCode
+
+This folder **must be added to XCode** so it gets bundled with the app.
+
+In XCode, `Project Navigator` right click in the folder project → `Add files to "<project>"` → Select the static folder **and clic options (Uncheck copy items if needed, Create folder references)** so don't duplicate files → Clic Add.
+
+When the app gets bundled, this folder will be next to the compiled app, so using `MainBundlePath` property from `react-native-fs` you can access to the directory.
+
+```javascript
+import StaticServer from 'react-native-static-server';
+import RNFS from 'react-native-fs';
+
+// path where files will be served from (index.html here)
+let path = RNFS.MainBundlePath + '/www';
+
+let server = new StaticServer(0, path);
+```
+
 If the server should only be accessible from within the app, set `localOnly` to `true`
 
 ```javascript