Module needs to support authentication methods (Enhancement)

[twitchell]

In some cases with private repos, you need to provide credentials to add a repository, find modules, or even install / update a module. We would need to be able to pass in a PS Credential and then apply that to the various commands for that repo.

[davidobrien1985]

@twitchell can you check if #17 fixes this?

[twitchell]

Sure, let me try them out. Thanks!