Update documentation for custom config (#113)
Update documentation for custom config (#113)

* Update documentation for custom config

Using a custom config does not look for things with the key called "db", so either the code should look for db, or update the documentation to reflect this.

* Move example of custom config file

salsita/node-pg-migrate,theoephraim/node-pg-migrate,salsita/node-pg-migrate,salsita/node-pg-migrate