Moved docs to jsdocs comments in the code, removed redundancy.
Moved Quirks and extra examples to errata sections of the docs TEMPLATE.md, linked the jsdoc comments to these sections.
Added dependencies to common plugin docs template and husky (precommit hook to regen the docs automatically).
Added gen-docs command to re-generate the docs.
Extended TOC manually [to include classes containing only one member](https://github.com/jsdoc2md/jsdoc-to-markdown/issues/34) (CameraPopoverHandle and CameraPopoverOptions).
Extended the docs via DMD template to include "Installation", "How to contribute" and "Docs are generated" warning.
github: close#129
