Documentation tasks

Rewritten docs. Some things to document:
- formrequests: supported rules
- hideFromAPIDocumentation
- overwriting with --force
- binary responses
- plugin api: responses - description, $stage property, scribe:strategy
- --env
- Use database transactions and create() when instantiating factory models

Release blocker

Port recent changes from old repo

Improvements

Speed

Features

Possible feature: https://github.com/mpociot/laravel-apidoc-generator/issues/731