Include templates into flipper-pkg npm package

Summary: "flipper-pkg init" command was broken: https://github.com/facebook/flipper/issues/1112

Reviewed By: passy

Differential Revision: D21385652

fbshipit-source-id: e852a3872130077b83523d4dc67963a4b23a7ad7

desktop/plugins/seamammals/package.json

@@ -25,6 +25,6 @@
   },
   "devDependencies": {
     "flipper": "0.40.0",
-    "flipper-pkg": "0.40.1"
+    "flipper-pkg": "0.40.2"
   }
 }