chore(package): update copy-webpack-plugin to version 3.0.1 (valor-so…

…ftware#229)

https://greenkeeper.io/

package.json

@@ -63,7 +63,7 @@
     "compression-webpack-plugin": "0.3.1",
     "conventional-changelog-cli": "1.2.0",
     "conventional-github-releaser": "1.1.2",
-    "copy-webpack-plugin": "2.1.3",
+    "copy-webpack-plugin": "3.0.1",
     "cpy-cli": "1.0.1",
     "del-cli": "0.2.0",
     "es6-promise": "3.1.2",