fix(package): update fastify-plugin to version 0.2.1

Closes #13

Author: greenkeeper[bot]

package.json

@@ -31,7 +31,7 @@
     "tap": "^10.7.2"
   },
   "dependencies": {
-    "fastify-plugin": "^0.1.1",
+    "fastify-plugin": "^0.2.1",
     "redis": "^2.8.0"
   }
 }