useCrossOrigin option and README changes

README.md

@@ -1,7 +1,7 @@
 Resemble.js
 ==========
 
-Analyse and compare images with Javascript and HTML5. [Resemble.js Demo](http://huddle.github.com/Resemble.js/)
+Analyse and compare images with Javascript and HTML5. [Resemble.js More info & Demo](http://huddle.github.com/Resemble.js/). If you need NodeJS support, take a look at [node-resemble](https://github.com/ddo/node-resemble)
 
 ![Two image diff examples side-by-side, one pink, one yellow.](https://raw.github.com/Huddle/Resemble.js/master/demoassets/readmeimage.jpg "Visual image comparison")
 
@@ -71,7 +71,8 @@ resemble.outputSettings({
   },
   errorType: 'movement',
   transparency: 0.3,
-  largeImageThreshold: 1200
+  largeImageThreshold: 1200,
+  useCrossOrigin: false
 });
 // resembleControl.repaint();
 ```
@@ -80,6 +81,9 @@ By default, the comparison algorithm skips pixels when the image width or height
 
 You can switch this modify this behaviour by setting the `largeImageThreshold` option to a different value. Set it to **0** to switch it off completely.
 
+`useCrossOrigin` is true by default, you might need to set to false if you're using [Data URIs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs).
+
+
 --------------------------------------
 
 Created by [James Cryer](http://github.com/jamescryer) and the Huddle development team.

resemble.js

@@ -64,12 +64,9 @@ URL: https://github.com/Huddle/Resemble.js
 	};
 
 	var errorPixelTransformer = errorPixelTransform.flat;
-
 	var largeImageThreshold = 1200;
-	
-	var httpRegex = /^https?:\/\//;
+	var useCrossOrigin = true;
 	var document = typeof window != "undefined" ? window.document : {};
-	var documentDomainRegex = new RegExp('^https?://' + document.domain);
 
 	var resemble = function( fileData ){
 
@@ -161,7 +158,9 @@ URL: https://github.com/Huddle/Resemble.js
 			var fileReader;
 			var hiddenImage = new Image();
 
-			hiddenImage.setAttribute('crossorigin', 'anonymous');
+			if(useCrossOrigin) {
+				hiddenImage.setAttribute('crossorigin', 'anonymous');
+			}
 
 			hiddenImage.onerror = function () { 
 				hiddenImage.onerror = null; //fixes pollution between calls
@@ -723,6 +722,10 @@ URL: https://github.com/Huddle/Resemble.js
 			largeImageThreshold = options.largeImageThreshold;
 		}
 
+		if (options.useCrossOrigin !== undefined) {
+			useCrossOrigin = options.useCrossOrigin;
+		}
+
 		return this;
 	};