Add S3 bucket creation to readme

infrastructure_setup.md

@@ -6,8 +6,16 @@
 2. Set your deployment target (staging):\
 `cf target -o dluhc-core -s staging`
 
-3. Create required backing services (this will take ~15 mins to finish creating):
+3. Create required Postgres and S3 bucket backing services (this will take ~15 mins to finish creating):\
   `cf create-service postgres tiny-unencrypted-13 dluhc-core-staging-postgres`
 
-4. Deploy manifest:
+  `cf create-service aws-s3-bucket default dluhc-core-staging-import-bucket`
+
+  `cf create-service aws-s3-bucket default dluhc-core-staging-export-bucket`
+
+  `cf bind-service dluhc-core-staging dluhc-core-staging-import-bucket -c '{"permissions": "read-only"}'`
+
+  `cf bind-service dluhc-core-staging dluhc-core-staging-export-bucket -c '{"permissions": "read-write"}'`
+
+4. Deploy manifest:\
 `cf push dluhc-core-staging --strategy rolling`