* Move contributing guide to the docs
I think it makes sense to address this information on the docs site, but
I also think the CONTRIBUTING.md convention is important.
In order to avoid duplicating the documentation for contributors, I
think it is a good idea to link people from the repo's contributing
guide to a document on the documentation site.
* Document difficulty labels
* Use Forem in place of DEV
* Add 80 character linewrap
* Expand the contributing guide [ci skip]
This commit includes a couple of expansions on the contributing guide
including some notes concerning documentation and the code of conduct.
There are also some small mechanical fixes and a link or two was fixed.
* Add views count for authenticated users articles [#4250]
* Bump API version to 0.5.6 [#4250]
* Add info about bumping API docs version requirement
* Fix Create pull request link by linking to the docs
The links work fine with viewed in the Contributing
section in the README, but don't work when viewing
the CONTRIBUTING file itself in GitHub. This just
adds the full URLs for some links.
