chore(package): update cpy-cli to version 3.1.0

Closes #21

Author: greenkeeper[bot]

package.json

@@ -53,7 +53,7 @@
     "babel-eslint": "^8.2.1",
     "babel-jest": "^22.0.6",
     "babel-plugin-inline-import": "^2.0.6",
-    "cpy-cli": "^1.0.1",
+    "cpy-cli": "^3.1.0",
     "del-cli": "^1.1.0",
     "eslint": "^4.15.0",
     "eslint-config-airbnb-base": "^12.1.0",