Support log_level option of Fleuntd v0.10.43
version bump v0.1.4
support log_level
add Gemfile for fluentd <0.10.43
Merge branch 'log_level'
version bump 0.1.5
add_development_dependency "octorelease"
Merge pull request #13 from sonots/octorelease

add_development_dependency "octorelease"