config.md: add information on -c option

[deepend-tildeclub]

added -c option to the how to run the bot. Without it I'm sure a ton of people had troubles with module loading and just gave up.

[examknow]

If the current configuration instructions are followed correctly, there is no need to pass the -c option as BitBot will look for the config file in ~/.bitbot/ by default.

[jesopo]

i'm sure a lot of people want to keep the config file in a non-default location?

[examknow]

Fair, however, I think it should be made more clear that this is optional and only necessary if the config file is located in a non-standard location.

[deepend-tildeclub]

If the current configuration instructions are followed correctly, there is no need to pass the -c option as BitBot will look for the config file in ~/.bitbot/ by default.

Yeah totally misread that when I set it up.. So that is my fault for sure.

[examknow]

It may be worth having a section describing all of the optional arguments that can be passed to bitbotd although the argparser help already accomplishes this IMHO.

[examknow]

one small formatting nitpick

[examknow]

If everybody's good with this, I'll merge later tonight. Thanks!