Issue - 413 Support for wildcard in paths options

[rishijain]

Check list:

• [x] Add an entry to the changelog
• [x] Squash all commits into a single one
• [x] Describe your PR, link issues, etc.

Description:

This PR adds support for passing **(wildcard) paths to the .rubycritic.yml file. So now someone can do something like:

paths:
  - app
  - packs/*/app

This was requested here.

The way I have implemented is to basically find all the valid directories that the ** expands to, so for example: if user passes packs/*/app and in the app, packs has 3 sub-directories in it but only 2 of them has app inside those sub-directories, I am resetting the options[:paths] to ['app', 'packs/pack1/app', 'packs/pack2/app' ].