add .travis.yml
add elasticsearch service to travis.yml
Merge pull request #34 from gojp/travis

add .travis.yml
update .travis.yml
update .travis.yml
update .travis.yml
update .travis.yml
update .travis.yml
update .travis.yml
Merge pull request #35 from gojp/travis

update .travis.yml
Merge pull request #36 from gojp/add-tests

Add tests
Update README.md
Merge branch 'master' into add-tests