WIP: New document for contributors on formatting

[sspencerwire]

• new document on using formatting in the documentation (admonitions,
  tables, numberd lists, block quotes)
• also covers nesting of these features

Author checklist (Completed by original Author)

• Contribution a good fit for the Rocky project? Title and Author MetaTags inserted ?
• Is this a non-English contribution?
• If applicable, steps and instructions have been tested to work on a real system
• Did you perform an initial self-review to fix basic typos and grammatical correctness

Rocky Documentation checklist (Completed by Rocky team)

• 1st Pass (Check that document is good fit for project and author checklist completed)
• 2nd Pass (Technical Review - check for technical correctness)
• 3rd Pass (Basic Editorial Review)
• 4th Pass (Detailed Editorial Review and Peer Review)
• Final pass/approval (Final Review)

[sspencerwire]

@alemorvan I'd love for you to also review this document. There are things here that you definitely know about and can possibly add clarity to.

[EzequielBruni]

Oh nice I love this. I'll give it a closer look tomorrow.

[wsoyinka]

@sspencerwire - many thanks for this. It is really needed and I know, I for one will be referencing it quite a bit :-).
I want to leave my review until it's rendered and available on docs.r.o . Once it's on docs.r.o it'll be much easier to appreciate the [intended] formatting. For this reason, I want to vote for us to just merge and review later .

[sspencerwire]

@sspencerwire - many thanks for this. It is really needed and I know, I for one will be referencing it quite a bit :-). I want to leave my review until it's rendered and available on docs.r.o . Once it's on docs.r.o it'll be much easier to appreciate the [intended] formatting. For this reason, I want to vote for us to just merge and review later .

@wsoyinka Sounds good to me. I think I'll let @EzequielBruni at least take a look at it from an editing perspective before we merge. (yes, I can edit my own documents, but I find that I'm not critical enough on me)