Update API docs to simplify table of contents

[ygongdev]

- [x] Moved setupOnerror to Test Framework APIs section
- [x] Removed Parameters from Table of Content

Additionally,
- [x] Removed Examples from Table of Content
- [x] Moved resetOnerror to Test Framework APIs section
- [x] Adjust number indexing for anchoring purposes to keep variables sorted.

Fixes #542
EDIT: The actual solution should be modifying the documentation build itself.

[ygongdev]

O just realized that we need to modify the documentation build, not the API.md

[ygongdev]

Currently, the documentation module doesn't support modifying the Table of Content's depth.
However, it seems like a quick trivial change. I created a small PR on documentation to try to get this going, documentationjs/documentation#1215.

[rwjblue]

Sounds great! Thanks for working on this!

[ygongdev]

@rwjblue documentation just merged my PR and released a new version.
Let me know if the API.md looks like what we want.

[rwjblue]

This looks great! Thank you for working on this!

There is a conflict in yarn.lock, if you could rebase and correct it I'll happily merge...

[ygongdev]

Rebased.