createdb instruction in README unclear

[schildbach]

The createdb command is mentioned in the README in order to create the correct Postgres DB. However, the command is neither in the repository, nor is it in the created docker image. I assume the documentation is out of date.

[DMRobertson]

createdb is part of postgres.

The specific database name (syncv3 in the example) isn't important because you can tell the proxy exactly how to connect to postgres via the SYNCV3_DB environment variable.

If you have suggestions for how to improve the readme, we would gladly review a PR.

[jimmybrancaccio]

I actually got tripped up on this too - I'm not very familiar with PostgreSQL. I wonder if it would be worth just adding a little note in that section with exactly what you said:

createdb is part of postgres.

Or just show CREATE DATABASE syncv3;.