Refactor away from pimple and homebrew console implementation to symfony

- Replace homebrew console controls like Message and Question with
  Symfony Console Component actions
- Replace the pimple DIC with Poor man's DI for simplicity
Fix comment indentation
Updated the readme with correct update command
Merge pull request #43 from turanct/refactor-symfony-console

Refactor away from pimple and homebrew console implementation to symfony