Extract title also form the alt attribute of a contained image

At this time we needed to specify the title attribute and the alt
attribute redundant.

Author: stackcoder

README.md

@@ -12,6 +12,7 @@ Swipebox is a jQuery "lightbox" plugin for desktop, mobile and tablet.
 
 ##Changes in this fork
 - Build and deploy swipebox in the cloud by travis-ci.org
+- Extract title also form the alt attribute of a contained image
 
 ##Features
 

src/js/jquery.swipebox.js

@@ -116,6 +116,8 @@
 
 						if ( $( this ).attr( 'title' ) ) {
 							title = $( this ).attr( 'title' );
+						} else if ( $( this ).find( 'img' ).attr( 'alt' ) ) {
+							title = $( this ).find( 'img' ).attr( 'alt' );
 						}