updated npm packages

package.json

@@ -38,11 +38,11 @@
   "readmeFilename": "README.md",
   "devDependencies": {
     "gulp-coffee": "~1.4.3",
-    "gulp-util": "~2.2.14",
+    "gulp-util": "~2.2.17",
     "gulp-header": "~1.0.2",
-    "gulp-uglify": "~0.3.0",
+    "gulp-uglify": "~0.3.1",
     "gulp-coffeelint": "~0.3.3",
-    "gulp": "~3.6.1",
+    "gulp": "~3.8.1",
     "gulp-less": "~1.2.3",
     "gulp-rename": "~1.2.0",
     "gulp-open": "~0.2.8",