Major/refactor into methods and pep8

[MChambers1992]

Major overhaul of the code, key changes listed below;

• JSON Config File
• Multiple query_objects supported now, each hashtag can have unique settings
• PEP8 compliant (for the most part)
• Better .gitignore
• Split into more manageable methods and classes

Readme file is now inaccurate, this will be updated at a later date.

[MChambers1992]

PR is merged as part of the fork here; https://github.com/MChambers1992/retweet-bot