Update to Grunt v1.0

Author: philwareham

package.json

@@ -18,15 +18,15 @@
   },
   "devDependencies": {
     "autoprefixer": "6.3.6",
-    "grunt": "~0.4.5",
+    "grunt": "~1.0",
     "grunt-cli": "~1",
     "grunt-concurrent": "2.2.1",
     "grunt-contrib-clean": "1.0.0",
     "grunt-contrib-copy": "1.0.0",
     "grunt-contrib-cssmin": "1.0.1",
     "grunt-contrib-jshint": "1.0.0",
     "grunt-contrib-watch": "1.0.0",
-    "grunt-dev-update": "1.4.0",
+    "grunt-dev-update": "2.0.0",
     "grunt-postcss": "0.8.0",
     "grunt-sass": "1.1.0",
     "grunt-sass-lint": "0.1.1",