add search prototype as standalone script
add working search prototype in app, tests passing
update rake task for elastic:reindex
remove unnecessary item delete
move search logic to an IndexerObserver
update rake task to use IndexFactory directly
add unit tests for lib/
remove search.rb, add trailing whitespaces
restore module structure in lib
turn off email notifications by travis
add rails_config gem
update item search with better interface
correct tests after rebase