README.md in postgres-vacuum-monitor-0.3.2 vs README.md in postgres-vacuum-monitor-0.4.0

@@ -65,9 +65,13 @@
   dead_tuples: # How many dead tuples are in the table.
   tuples_over_limit: # How many dead tuples are over the auto vacuumer threshold.
 }
 ```
 
+## Testing
+
+To run the rspec tests, you need to create a DB called `postgres_vacuum_monitor_test`.
+
 ## New relic queries
 
 I use [New relic](https://rpm.newrelic.com) and use the following NRQL to create dashboards:
 
 #### Tuples over limit