update to new gulp and new uglify version.

package.json

@@ -11,13 +11,13 @@
   "license" : "MIT",
   "dependences": {},
   "devDependencies": {
-    "gulp": "3.5.x",
+    "gulp": "3.9.x",
     "gulp-concat": "~2.1.x",
     "gulp-connect": "~2.0.5",
     "gulp-jshint": "~1.5.1",
     "gulp-replace": "^0.4.0",
     "gulp-size": "~0.4.0",
-    "gulp-uglify": "~0.2.x",
+    "gulp-uglify": "~1.5.x",
     "gulp-util": "~2.2.x",
     "gulp-html-validator": "^0.0.2",
     "inquirer": "^0.5.1",