Mapping rule for parameters to config file keys does not always apply

README.md reads:

> When using a yaml file instead of the command line， Convert the - of the parameter in the command to .. Note that --storage is converted to storage.backend

Unfortunately this is not correct for a bunch of options and there might be no easy way to fix that (I failed to build a working mapping in #343 - which of cause does not mean that this can't be done with a bit more effort/knowledge :wink: ). Also see #308 for more context.

Maybe this part of the readme should be replaced with something pointing the user to look up the correct keys to use in https://github.com/helm/chartmuseum/blob/master/pkg/config/vars.go#L45