Implemented Thor

Hi Christian,

Thought this was a great little project and thought it could benefit from using Thor! Let me know what you think, no worries if this doesn't get merged as it's all in my own fork and has been a good learning experience. Please see my updates listed below. Give me a shout if you have any questions.

* Implemented Thor to build a powerful command-line interface (http://whatisthor.com/)
* Fixed indentation and added .editorconfig
* Removed Gemfile.lock and updated .gitignore
* Updated README.md with new implementation

I think my changes can be extended and further modularised. I wanted to do additional work to check whether a buddy or chat exists etc but thought I would put this initial PR in first.