Add documentation to the code

[courtneypacheco]

What would you like to be added:
Documentation for the code

Why is this needed:
I would like to contribute to this codebase, but I am not familiar with any of the NFD code right now. So, I'm going to have to ramp up and learn how everything works, but I figure that if I'm going to learn the codebase, I might as well update the documentation by adding comments to functions, etc in the process. Then new users who want to contribute to this codebase will be able to ramp up quickly, which will hopefully encourage more people to contribute to this repo.

Thoughts?

[ArangoGutierrez]

/assign @courtneypacheco

[marquiz]

Welcome @courtneypacheco! I think improving/adding docstrings and adding comments where you find the code hard to follow is very much appreciated

[k8s-triage-robot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-contributor-experience at kubernetes/community.
/lifecycle stale

[ArangoGutierrez]

/remove-lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle stale
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/lifecycle stale

[vaibhav2107]

/remove-lifecycle stale

[marquiz]

Fixed by #87, I'd say
/close

[k8s-ci-robot]

@marquiz: Closing this issue.

In response to this:

Fixed by #87, I'd say
/close

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