Bump Fastify (#39)

Author: cemremengu

package.json

@@ -24,7 +24,7 @@
   "devDependencies": {
     "express": "^4.16.4",
     "express-http-proxy": "^1.5.0",
-    "fastify": "^2.0.0-rc.6",
+    "fastify": "^2.0.0",
     "got": "^9.5.0",
     "http-errors": "^1.7.1",
     "http-proxy": "^1.17.0",