updated docs

README.md

@@ -74,7 +74,7 @@ customOverlay           | element       | undefined     | Optional. A custom ele
 Property	|	Type		|	Default		|	Description
 :-----------------------|:--------------|:--------------|:--------------------------------
 images                  | array         | undefined     | Required. An array of objects containing image properties (see Image Options above).
-id                      | string        | "ReactGridGallery" | Optional. `id` attribute for `<Gallery>` tag.
+id                      | string        | "ReactGridGallery" | Optional. `id` attribute for `<Gallery>` tag. This prop may be useful for those who wish to discriminate between multiple galleries.
 enableImageSelection    | bool          | true          | Optional. Allow images to be selectable. Setting this option to `false` whilst supplying images with `isSelected: true` will result in those images being permanently selected.
 onSelectImage           | func          | undefined     | Optional. Function to execute when an image is selected. Allows access to image object using `this` (See [Programmers notes](#programmers-notes) for more info about implicit `this`). Optional args: index (index of selected image in images array), image (the selected image). This function is only executable when `enableImageSelection: true`. 
 rowHeight               | number        | 180           | Optional. The height of each row in the gallery.