Pre alpha mrsetup

[miha42-github]

Introduction

This is a largish feature for the CLI focused on initial setup for the CLI and backend. Now mr_setup will run and perform the following steps:

1. Prompt the user to pick a backend server
2. With the backend server selected, start the add company wizard
3. Use the method for creating a consistent bucket name to create a new bucked for the added company
4. Create a default study
5. Write the configuration file to the ~/.mediumroast/config.ini file
6. GET and list created company and study objects

Additional improvements

The cli.js file was broken up into smaller function specific files to enable better maintenance of the code.