Update NEONpost.md

Very minor edits: just tiny grammar tweaks and a few new links. Thanks for this thoughtful and well-structured draft. I'm sending it along to Jen Walton (as a Word doc) for higher level edits, and then I'm pretty sure it'll be ready to go into the blog. Do you have any images in mind? I need at least one to post it.

Do you have an opinion on whether it might be easier to train non-coding people to write in straight markup than in HTML via WYSIWYG editor? Our company wiki and our website CMS both currently use a WYSIWYG, and I hate them both. I have minimal experience with wiki markup but it's so much simpler to use when mainly text is involved.