Fix bug where assets with a space in their path could not be bundled.

lib/inline-css-url.js

@@ -16,7 +16,9 @@ var url = require('url');
 var clean = function (path) {
 	path = url.parse(path);
 	path = _.pick(path, ['protocol', 'host', 'pathname']);
-	return url.format(path);
+	path = url.format(path);
+	path = decodeURI(path);
+	return path;
 };
 /**
  * Convert local url data type paths to datauris.