Merge pull request #8 from robertchoi8099/master

add mkd-stag attr
auto_version to 1.0.1
Merge pull request #9 from robertchoi8099/master

add logstash::default to run_list
Merge pull request #10 from robertchoi8099/master

make elasticsearch_ip optional
auto_version to 1.0.2
Merge branch 'master' of github.com:cloudware-cookbooks/ktc-logging
edit README