Website improvements

[cticenhour]

This is a general issue/task list regarding the Zapdos website, now that we have something live and are iterating on it up to GEC (and beyond). Feel free to edit this and add tasks. Please reference this issue as you make PRs.

• [ ] Benchmark pages (links added to main navigation?)
• [ ] Central location for talks given based on Zapdos?
• [x] Instructions for Peacock in Getting Started instructions (#169)
• [x] Add links to CRANE examples (#169)
• [x] Zapdos doxygen generation and link (#165)
• [x] Fixup warning for deprecated HOME parameter (remove home: https://shannon-lab.github.io/zapdos from config.yml) (#142)
• [x] Contribution Guidelines (#82)
• [x] Code Standards (#82)
• [x] Collaborators and funding sources gallery (#42)
• [x] More class descriptions in doco (#45)
• [x] Update Getting Started description to include new conda methods (simplify!) (#82)
• [x] Publications using Zapdos (#82)
• [x] Add Squirrel and CRANE syntax links (#142)
• [x] Add CI for website generation and updating (#153)