Generate experiments from hexo theme

* Generate via theme from static site generator at
https://github.com/fofr/paulrhayes.com
* This replaces a bespoke script
* Include a canonical link back to original source
Add an old perspective experiment

* Early exploration of perspective from 2009
Move inline css & js from 3d cube to files

* Put the original 3d cube styles into experiment.js/.css
* Move the touch specific ones into touch.js/.css
Port spacing tweaks from static site

* Improve the vertical position of experiments within the page
* Avoid styling generic html elements
Merge pull request #10 from fofr/new-generator

Generate experiments via hexo theme