Update deps to newer version tested to compile correctly.

Author: jabbany

package.json

@@ -16,13 +16,13 @@
   "devDependencies": {
     "grunt": "~0.4.1",
     "grunt-typescript":     "~0.3.0",
-    "grunt-autoprefixer":   "~0.8.0",
-    "grunt-contrib-clean":  "~0.5.0",
-    "grunt-contrib-copy":   "~0.5.0",
+    "grunt-autoprefixer":   "~1.0.0",
+    "grunt-contrib-clean":  "~0.6.0",
+    "grunt-contrib-copy":   "~0.6.0",
     "grunt-contrib-watch":  "~0.6.0",
-    "grunt-contrib-concat": "~0.4.0",
+    "grunt-contrib-concat": "~0.5.0",
     "grunt-contrib-cssmin": "~0.10.0",
-    "grunt-contrib-uglify": "~0.5.0",
+    "grunt-contrib-uglify": "~0.6.0",
     "load-grunt-tasks":     "~0.6.0"
   }
 }