Fixed typo on README. (#202)

* Fixed crash in iPad when we tap(Long press) on image viewer in full screen mode to share the image or video.

* Fixed typo on README.

* Removed unnecesary code.

Author: JohnProg

README.md

@@ -31,7 +31,7 @@ github "MailOnline/ImageViewer"
 For a detailed example, see the [Example](https://github.com/MailOnline/ImageViewer/tree/master/Example)!
 
 ```swift
-// Show the ImageViewer with with the first item
+// Show the ImageViewer with the first item
 self.presentImageGallery(GalleryViewController(startIndex: 0, itemsDataSource: self))
 
 // The GalleryItemsDataSource provides the items to show