jekyll pages repo:
https://jekyllrb.com/docs/github-pages/
from scratch:
http://jmcglone.com/guides/github-pages/
github pages error notification found in:
https://github.com/cschar/blog/settings
make sure to update
gem "minima", "~> 2.5.1"
when there are minima updates at github.com/jekyll/minima
bundle update
bundle exec jekyll serve