I’ve added a settings page, containing the option to switch off the “Built with SAFECMS” button in the default template, as discussed here: An open discussion: Should the default Safe-CMS template contain a "Built with" advert?
In addition to this, I’ve also given power users the option to disable the Medium editor used for posts and to instead use the HTML editor provided for creating templates. This allows people with a strong knowledge of HTML to write their posts without the restrictions of a WYSIWYG editor. @happybeing I will be adding Markdown support within the next 2 weeks, for you in particular. 
The settings page can be seen here:
