lk | add staging env to database.yml

config/database.yml

@@ -14,6 +14,14 @@ test:
   username:
   password:
 
+staging:
+  adapter: postgresql
+  database: db/bikedb_staging
+  pool: 5
+  timeout: 5000
+  username:
+  password:
+
 production:
   adapter: postgresql
   database: db/bikedb_production