Integrate Kibana for an advanced key-word search over the news documents

[sameeravithana]

This task is to introduce "key-word" search over the news document corpus collected in Elasticsearch. Following steps are required to complete the task:

1. Implement a wrapper on top of Kibana to query Elasticsearch [1]
2. Visualize Kibana dashboard with basic plots [2]
3. Visualize time-series data using KIbana timelion [3]

REFS:
[1] https://www.elastic.co/guide/en/kibana/current/getting-started.html
[2] https://www.elastic.co/guide/en/kibana/current/visualize.html
[3] https://www.elastic.co/blog/timelion-tutorial-from-zero-to-hero