add some specification

Author: Selma Zaim

README.md

@@ -50,6 +50,7 @@ class YourComponent extends Component {
       <View>
         <DocumentScanner
           useBase64
+          saveInAppDocument={false}
           onPictureTaken={data => this.setState({
             image: data.croppedImage,
             initialImage: data.initialImage,
@@ -87,7 +88,7 @@ class YourComponent extends Component {
 | contrast | `1` | `float` | Increase or decrease camera contrast. Normal as default |
 | quality | `0.8` | `float` | Image compression. Reduces both image size and quality |
 | useBase64 | `false` | `bool` | If base64 representation should be passed instead of image uri's |
-| saveInAppDocument | `false` | `bool` | If should save in app document |
+| saveInAppDocument | `false` | `bool` | If should save in app document in case of not using base 64 |
 | captureMultiple | `false` | `bool` | Keeps the scanner on after a successful capture |
 
 ## Manual capture