add auto increment id of table user
Fix hard coded site URL in @username mention
Merge pull request #3 from kenjis/fix_username_mention

Fix hard coded site URL in @username mention
Fix search

Update search code, change how to search.
Tested on Elasticsearch v1.4.1 and elasticsearch/elasticsearch v1.3.1.
add monologer slack
 Security Improvement thank@kenjis
Merge pull request #4 from kenjis/fix_search

Fix search