Continuous aggregate policy example in readme doesn't work

[Tomcat-Engineering]

The readme file has this example for adding a continuous aggregate policy:

    add_continuous_aggregate_policy('events_per_minute',
      start_offset: '3 minute',
      end_offset: '1 minute',
      schedule_interval: '1 minute') 

But I think that this is actually the raw SQL that is needed, not the ruby code?

In ruby:

1. The method is called create_continuous_aggregate_policy
2. You need to add extra quotes to the durations. "'1 minute'" and "INTERVAL '1 minute'" seem to work.

On the second point, it looks like it might be a good idea to have the library apply parse_interval to the durations (noting that the offsets can also be nil)?