add a new method called 'update' into GalleryService to be able to update an image of the gallery calling this method, also when modal-gallery is already opened #161
(requested and partially implemented by @smardine (see pull request https://github.com/Ks89/angular-modal-gallery/pull/162))
when you add images asynchronously with the modal gallery already opened, infinite sliding, the arrows, images and previews are managed in the wrong way (reported by @rezo-evodion #157)
when you add images asynchronously with the modal gallery already opened, infinite sliding, the arrows, images and previews are managed in the wrong way (reported by @rezo-evodion #157)