Merge pull request #250 from chmanie/master

change supportsArrayBuffer check to work with Safari

Author: diegocr

jspdf.plugin.addimage.js

@@ -305,7 +305,7 @@
 	 * Check to see if ArrayBuffer is supported
 	 */
 	jsPDFAPI.supportsArrayBuffer = function() {
-		return typeof ArrayBuffer === 'function' && typeof Uint8Array !== 'undefined';
+		return typeof ArrayBuffer !== 'undefined' && typeof Uint8Array !== 'undefined';
 	};
 
 	/**