Jazzy docs (WIP)

[xtopolis]

Want to help out? Submit your own PR or ask to be added to the fork in a comment below

Addresses https://github.com/intuit/CardParts/issues/58

How to contribute

Add documentation for a file below by reading the class and adding comments using Xcode Markup syntax and/or copying documentation from the README.md

• 🏷 Tag me in this PR and I'll invite you to my fork; or just submit your own if you're working faster.
• ⚙️ Install jazzy gem per the docs: https://github.com/realm/jazzy#installation
• 💻 run: jazzy from the CardParts top level directory and it should regenerate the docs using the .yaml file
• 📝 You can preview the docs locally by opening docs/index.html
• ⌨️ Add more documentation via Xcode Markup syntax (ex: https://github.com/xtopolis/CardParts/commit/31376c1f93019f24479a92e3fbb7ee3bb8089101#diff-cdc7d55cd8d97946d31261239b70ab82R39) , copy from the README if appropriate

TODO at the end:

• [ ] Remove docs/ from gitignore
• This is where the magic happens: .jazzy.yaml

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Generate docs and review docs/undocumented.json for remaining pieces.

[xtopolis]

Added instructions in the description for how to help out ^