npm install --save opn

Reviewed By: mkonicek

Differential Revision: D2570884

fb-gh-sync-id: 89f9ab8e8b04081442da28e8c30caa80b454d696

Author: frantic

npm-shrinkwrap.json

@@ -63,6 +63,7 @@
     "jstransform": "^11.0.3",
     "module-deps": "^3.9.1",
     "node-fetch": "^1.3.3",
+    "opn": "^3.0.2",
     "optimist": "^0.6.1",
     "progress": "^1.1.8",
     "promise": "^7.0.4",