postgresql_database.yml.erb in startblock-1.4

- old
+ new

@@ -8,5 +8,13 @@
   timeout: 5000
 
 test:
   <<: *default
   database: <%= app_name %>_test
+
+staging:
+  <<: *default
+  url: <%= ENV["DATABASE_URL"] %>
+
+production:
+  <<: *default
+  url: <%= ENV["DATABASE_URL"] %>