Establish consistent capitalization

[jayqi]

There are inconsistent stylings of deon lowercase and Deon uppercase throughout the documentation. There should be an agreed-upon styling, and the other way should be fixed.

As for considerations:

• deon lowercase will look like the CLI and the logo.
• Deon uppercase will look less weird when used in prose, especially at the beginning of a sentence

There are examples of other command-line programs adopting either styling:

• grep, pip
• Git, Vim, Emacs, Conda

Other option is to use deon lowercase everywhere, except when beginning a sentence. Deon is uppercase at the start of a sentence. This is kind of a cop-out, which avoids some awkwardness, but ends up with inconsistency.

Personally, I'm in favor of uppercase Deon, because I really don't like the weird sentence beginnings. I could also go with the lowercase-except-sentence-beginning.

FWIW, the Wikipedia Style Guide would suggest uppercasing.

[pjbull]

I don't feel strongly. Uppercasing is fine with me, but I don't promise to always do so throughout my tweets, presentations, slack messages and other communiques.