add version number to Gemfile
remove unused gems
bundle update
update Rails to 3.2.10
Merge branch 'refs/heads/master' into angular
remove handlebars_assets gem
add version number to component.json
add Underscore.js
add angular-sanitize
format post body
render post's comments
textarea expanding in post/comment form
render post/comment's created_at
tags with a post rendering