update Gemfile with guard / guard-livereload / rack-livereload / rb-fsevent
update Gemfile with bootstrap 3.1.1.0 create bootstrap_sass.css.scss update application.js
create partial _header / _footer update application.html.erb with google site-verification
create controller pages audio / boeken / onderwijs / contact update navigation
Merge branch 'bootstrap-customize' into develop