parse !important

lib/less/parser.js

@@ -398,14 +398,16 @@ less.parser = {
             }
         },
         value: function value() {
-            var e, expressions = [];
+            var e, expressions = [], important;
 
             while (e = $(this.expression)) {
                 expressions.push(e);
                 if (! $(',')) { break }
             }
+            important = $(/!\s*important/g);
+
             if (expressions.length > 0) {
-                return new(node.Value)(expressions);
+                return new(node.Value)(expressions, important);
             }
         },
         sub: function sub() {