Fix issues with express benchmark and synchronize package.json with template
diff --git a/templates/package.json.template b/templates/package.json.template
index e9596d4..2b3d32e 100644
--- a/templates/package.json.template
+++ b/templates/package.json.template
@@ -36,6 +36,8 @@
     },
     "devDependencies": {
       "async": "^1.5.0",
+      "body-parser": "^1.15.2",
+      "express": "^4.14.0",
       "google-auth-library": "^0.9.2",
       "google-protobuf": "^3.0.0",
       "istanbul": "^0.3.21",