Adding commandline options to list boards and ports

[makenai]

Closes #1

Added commandline options to list boards and ports. Started adding some test boilerplate to build upon and tests for board detection.

Let me know if any of the output or refactoring isn't up to spec and I can fix it up.

[noopkat]

@makenai thank you for this! These are really nice ideas/additions. I have some feedback for this PR, but need a little time to write it up. Stay tuned!

[noopkat]

spelling of Avrgirl

[makenai]

Doh!

[makenai]

Thanks for the feedback, Suz! Give me a few days and I'll address the issues.

[makenai]

Sorry it took me a bit longer than I thought to get back to this. I've incorporated your suggested changes and rebased against master. How does this look?

[makenai]

@noopkat Patch up to preserve the exit status - thanks for explaining!

[noopkat]

Thanks @makenai! Merged and will publish soon with some other additions (like CI / new styleguide stuff and readme changes).

Just a small note - for now I have consolidated the list CLI method to just output the verbose version only. The reasoning is that I'd prefer to speak to some active avrgirl-arduino users first and gather some requirements and ideas from them first before setting anything in stone for this. I'm sorry to give you the runaround for that JSON object in the end, I hope you understand.

I really appreciate these contributions though, so thanks again 👏

[makenai]

Thank you, Susan.