Editor5 is a text/html editor using content editable and localStorage. Documents are persisted to redis.
Install redis:
sudo apt-get install redis-server
by default editor5 will try to connect to localhost.
Install PHP dependencies with composer:
composer install
From the host you setup on, the root page is the 'draft' page. If you save from that page, your document will have a random ID assigned to it and you'll be redirected to /{id}.
You can also go directly to the page you want to edit: eg. http://host/page-of-awesome and begin editing. When you save, the contents of the page are saved with the key provided in the URL.