remove travis deploy in favor of heroku pipelines

Author: kiwiupover

.travis.yml

@@ -24,11 +24,3 @@ install:
 script:
   - npm run lint:js
   - npm test
-
-deploy:
-  provider: heroku
-  api_key:
-    secure: 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
-  app: fastboot-website
-  on:
-    repo: ember-fastboot/fastboot-website

app.json

@@ -25,6 +25,9 @@
     },
     "WORKER_COUNT": {
       "required": true
+    },
+    "EXPERIMENTAL_RENDER_MODE_SERIALIZE": {
+      "required": true
     }
   },
   "formation": {