Trello-cli-kit

Minor improvement for **v1.0.0** release

Core
- added new functions to authorize user and check if user is authorized

CLI
- modify commands to use newly-implement4ed check authorization function

Maintenance to **v1.0.0** release

Audits
- improvements to top-level folder management

This is the first **stable** release.

Core
- TrelloService class implementation (authorize user, retrieve trello elements (board, trellolist, card, label), and add card)
CLI
- Command Groups: create, config
- Commands: list
Testing
- CLI
- TrelloService
Misc
- Documentation and packaging