chore(package): update node-fetch to version 1.7.0 (#2049)

package.json

@@ -119,7 +119,7 @@
     "husky": "0.13.3",
     "jest-cli": "20.0.2",
     "lint-staged": "^3.4.0",
-    "node-fetch": "1.6.3",
+    "node-fetch": "1.7.0",
     "node-notifier": "5.1.2",
     "nyc": "10.3.2",
     "react": "15.5.3",