chore(package): update flow-copy-source to version 2.0.1

Closes #8

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "eslint-plugin-flowtype": "^2.45.0",
     "eslint-plugin-import": "^2.7.0",
     "flow-bin": "^0.67.1",
-    "flow-copy-source": "^1.3.0",
+    "flow-copy-source": "^2.0.1",
     "jest": "^22.4.0",
     "koa": "^2.5.0",
     "rimraf": "^2.6.1"