You are looking at elasticsearch/config/elasticsearch.yml, but asked question about kibana/config/kibana.yml.
To summarize, the default config should be fine. Lines beginning with # are comments and unused.
Point your browser to http://localhost:5601 and Kibana should fire up.
If you change the setting network.host in elasticsearch.yml, you will need to adapt kibana.yml accordingly.
Be aware that network.host setting has changed very much from 1.6 to 2.1 (see https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking_20_network_changes.html). There is also plenty of discussion about this fact in this forum, e.g. ES 2.1 only bind on localhost or Connectivity issues with a new/upgraded 2.X cluster? Read here first :) (this one is even pinned at the top 
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