I (RNM) Got this working by copying into a site generated by jekyll new.
Agency theme based on Agency bootstrap theme
###Portfolio
Portfolio projects are in '/_posts'
Images are in '/img/portfolio'
###About
Images are in '/img/about/'
###Team
Team members and info are in '_config.yml'
Images are in '/img/team/'
View this jekyll theme in action here
========= For more details, read documentation