Correct the mentioned pylint errors to get perfect 10. (too-few-public-methods, invalid-name)

[LordGameleo]

We are currently using a customized checklist for pylint. We have disabled a lot of checks to make our build successfully. We want to counter these checks few at a time. This issue deals with one of them.

How to produce:

After forking and cloning this repo, make a branch named develop-Pylint_Issue#186 using
git branch develop-Pylint_Issue#186

Checkout branch by
git checkout develop-Pylint_Issue#186

remove ``too-few-public-methodsandinvalid-name``` from .pylintrc file

Check pylint errors using
pylint * on terminal (in the repo)

Add doc strings to get a perfect 10 score on pylint.