Github user mars commented on the issue:
https://github.com/apache/incubator-predictionio/pull/401
Hi @BrianOn99,
Adding that `--jars` option to `pio-shell` command is the right solution,
and then the "No suitable driver found" error can be solved by adding the
Postgres driver to your PredictionIO install:
1. download [Postgres JDBC
driver](https://jdbc.postgresql.org/download.html) (probably the newest one for
Java 8)
2. put it in the PredictionIO distribution's `lib/` directory (this
directory is sibling to the `bin/` directory where the `pio` command is
located; any jars in that directory are automatically added to the classpath
for `pio` commands)
We're working on releasing 0.12!
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