Support zen (full writing) mode

[jackycute]

Sometimes we just want to focus on writing and hope it looks easy to use (normal user friendly).
So maybe can build a mode or theme called "Zen" (禪), help users to immerse into the writing world.

It will only use font-size, few font colors (4-6) and font-style, font-weight to layout the markdown.
No code folding, no line number, no split preview (consider itself a result).

Feel free to comment any ideas!

[jackycute]

Refer some screenshots from StackEdit

[jackycute]

Update: remove autocomplete and add Medium-like popover toolbar.
And keep split view in order to preview diagram or charts.
refer to #4

[jackycute]

A thought that pressing some kind of key (or combination) in this mode will fade in preview.

[jackycute]

https://facebook.github.io/draft-js/

[almereyda]

https://github.com/ianstormtaylor/slate
https://github.com/NextStepWebs/simplemde-markdown-editor

[jackycute]

Thanks @almereyda!
Both looks great! And SimpleMDE might even integrate now.

[almereyda]

Cool, glad you appreciate the contributions.

[jackycute]

@almereyda Hey, don't get me wrong, I always appreciate the contributions.
But please do understand that it won't make a good project/product if it includes every kinds of features.
We have to make choices, to polish and refine to be a better one.