ERROR: bootstrap checks failed
    memory locking requested for elasticsearch process but memory is not locked

I am getting this error while bringing up ES. I am running my ES as user. How to lock the memory while running it as a user???
---
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB