Merge pull request Automattic#12 from cbumgard/master

Fix for @media rules in css (which do not have selectorText)

Author: rauchg

lib/utils.js

@@ -56,11 +56,13 @@ exports.parseCSS = function (css) {
     , ret = []
 
   for (var i = 0, l = rules.length; i < l; i++) {
-    var rule = rules[i]
-      , selectors = exports.extract(rule.selectorText)
+    if (rules[i].selectorText) { // media queries don't have selectorText
+      var rule = rules[i]
+        , selectors = exports.extract(rule.selectorText)
 
-    for (var ii = 0, ll = selectors.length; ii < ll; ii++) {
-      ret.push([selectors[ii], rule.style]);
+      for (var ii = 0, ll = selectors.length; ii < ll; ii++) {
+        ret.push([selectors[ii], rule.style]);
+      }
     }
   }