Update .gitmodules

trying to updating .gitmodules again to trigger build
Merge branch 'gh-pages' of https://github.com/timbresmith/Hyperspectives into gh-pages
hyperspectives.whew.xyz
rebuild pages
use https:// for submodule url, as recommended by github support
don't put .git at the end, see if that works...
use three.js at r47
use main three.js repo
rebuild pages
use https:// not git://
point to Three.js correctly
switch to three.js r68, updatethumb size