Update example format and readme

[cjepson]

The example formatting has been commented out, allowing the default values to be used in most cases. As examples given for addresses are for testnet, the ports and network flag have been rolled back. The readme was updated correspondingly.

[jolan]

Looks good except for the stray "Linux/BSD/POSIX/Source" title in README.md

[jolan]

The examples that reference defaults probably should be updated too:

-C, --configfile= Path to configuration file (../dcrticketbuyer/ticketbuyer.conf) -> .dcrticketbuyer/ticketbuyer.conf --logdir= Directory to log output (../dcrticketbuyer/logs) -> .dcrticketbuyer/logs

[raedah]

Most people downloading decred releases are going to be running it on mainnet. Why are we giving all examples for testnet, so that people have to manually figure out the correct ports to configure?

[cjepson]

@raedah I know from experience that if you put default mainnet addresses in, some people will use them and then ask where their coins went. This makes them manually change them, which will make it harder. The other thing is that I would encourage everyone to try this on testnet to make sure it's correctly configured before attempting to use it on mainnet, since once coins are spent they can not be unspent.

[cjepson]

@jolan @jcv done

[jcvernaleo]

Looks good to me. OK

[jolan]

OK by me too.