chore(package): update lodash to version 4.13.1 (#1921)

https://greenkeeper.io/ [skip ci]

Author: greenkeeperio-bot

package.json

@@ -46,7 +46,7 @@
     "gulp-beautify": "^2.0.0",
     "gulp-filter": "^4.0.0",
     "insight": "~0.8.1",
-    "lodash": "^4.6.1",
+    "lodash": "^4.13.1",
     "semver": "^5.1.0",
     "underscore.string": "^3.1.1",
     "yeoman-generator": "~0.23.3",