bip21: use RegExp.exec instead of String.match.

lib/BIP21.js

@@ -56,7 +56,7 @@ BIP21.prototype.parse = function(uri) {
   }
 
   // workaround to host insensitiveness
-  var group = uri.match('[^:]*:/?/?([^?]*)');
+  var group = /[^:]*:/?/?([^?]*)/.exec(uri);
   this.setAddress(group && group[1]);
 
   for (var arg in info.query) {