Testnet installer
A variation on the regular installation script, intended to simplify installation/update of a testnet wallet/node.
It assumes the testnet wallet/node will be the only one running on the machine (ie: datadir is .crown and config is crown.conf)
If you want to run mainnet and testnet on the same machine (which is certainly possible) I assume you're capable of juggling the datadir and/or config file name yourself.