added Gem tire
added model elasticsearch
start to migrate the search engine from searchify to elasticsearch
added configuration for each environment
use only one index for all the documents
added elastic search url for local environment
load the global variable for app config
fixed the method search
mapping the published_at and created_at for elasticsearc
fixed the query string
change the order to map the fiedls for FeedEntry
use name instead of text variable
load the new ElastiSearch client and remove the serchify client
added the new query builder for elasticsearch client
use elasticsearch client instead of searchify client
load the elasticsearch client
Allow search using multiple facets and using geo points
added order by coeficient and social ranking
avoid sorting fail  on an empty result set
prepare the result with the pagination options