chore(deps): update dependencies

Author: teawithfruit

package.json

@@ -27,14 +27,14 @@
     "gulp": "^3.8.11",
     "gulp-browserify": "^0.5.1",
     "gulp-callback": "0.0.3",
-    "gulp-install": "^0.2.0",
+    "gulp-install": "^0.6.0",
     "gulp-jshint": "^1.9.2",
     "gulp-nodemon": "^1.0.5",
     "gulp-rename": "^1.2.2",
     "gulp-ruby-sass": "^1.0.0-alpha.3",
     "gulp-util": "^3.0.4",
     "handlebars": "^3.0.0",
-    "koa": "^0.20.0",
+    "koa": "^0.21.0",
     "koa-body-parser": "^1.1.1",
     "koa-handlebars": "^0.5.2",
     "koa-mount": "^1.3.0",
@@ -43,7 +43,7 @@
     "koa-static": "^1.4.9",
     "q": "^1.3.0",
     "request": "^2.55.0",
-    "util": "^0.10.3",
+    "util": "^0.12.0",
     "wiredep": "^2.2.2"
   },
   "devDependencies": {