chore(dependencies): update app dev dependencies

Author: kingcody

app/templates/_package.json

@@ -72,7 +72,7 @@
     "jit-grunt": "^0.9.1",
     "time-grunt": "^1.2.1",
     "grunt-express-server": "^0.5.1",
-    "grunt-postcss": "^0.5.5",
+    "grunt-postcss": "^0.6.0",
     "grunt-open": "~0.2.3",
     "open": "~0.0.4",
     "jshint-stylish": "~2.0.1",
@@ -104,7 +104,7 @@
     "karma-ng-html2js-preprocessor": "~0.1.2",
     "karma-spec-reporter": "~0.0.20",
     "proxyquire": "^1.0.1",
-    "supertest": "~0.11.0"
+    "supertest": "^1.1.0"
   },
   "engines": {
     "node": ">=0.12.0"