Merge branch 'master' into 2017-Update

# Conflicts:
#	assets/js/bundle.js

Author: etsaaron

README.md

@@ -1,4 +1,4 @@
 ### Responsive CSS Sprite Generator
 ###### A tool for generating CSS sprite sheets using percentage based background positions
 ---
-Hosted version of the tool can be found [here](http://responsive-css.us/)
+A hosted version of the tool can be found at [responsive-css.us](https://responsive-css.us/)

assets/js/legacy/packer.js

@@ -86,7 +86,7 @@ Packer.prototype = {
     draw: function (blocks, canvas, output) {
         var ctx = canvas.getContext('2d');
         var gitubUrl = '/*\nResponsive CSS Sprite created using: ' +
-            'http://responsive-css.us/\n' +
+            'https://responsive-css.us/\n' +
             '*/\n\n';
         var groupSelectors = '';
         var globalStyle = '\n{display:inline-block; overflow:hidden; ' +