fix filter by item type in offers
update README
add categories to offers
categories in sidebar
add bindonce to offers
fix index.html
Merge branch 'master' of github.com:openlets/openlets-spa
moved base api url to constant
filter by category
Merge branch 'master' of github.com:openlets/openlets-spa
Merge branch 'master' of github.com:openlets/openlets-spa
finished setup
fix filter by item type
add links in header
add show offer page
removed angularjs-rails-resource
merge with Elan