Piston patches

[Chris Brannon]

Hi guys,
I'm sorry that I was so slow. I had too many distractions!
Those are my first two commits. Retrieval of package info is working
here, and the output is pretty faithful to the draft on the Arch wiki.

I thought about adding PyYaml to the dependency list. It's an optional
dependency of Piston.
Thoughts?

-- Chris

[Sebastian Nowicki]

Awesome! I'll try to test it out this weekend.

JSON is considered to be a subset of YAML, so I don't really see the
point of using YAML and JSON. We wouldn't really be using any of
YAML's feature anyway - it'd just be prettier.

[Sebastian Nowicki]

Hi Chris,

Apologies for taking so long with this. Patches have been applied with
a few minor formatting tweaks. The API is working great. It seems very
intuitive.

Thanks.