Merge branch 'release/v0.0.1'
Merge branch 'release/v0.1.0'
Merge branch 'develop'
modified gem (add rspec)
modified dummy app
Add spec_helper.rb
Modified whitelist logic.
add gem 'rails'
remove unused code.
modified blacklist logic.
Merge branch 'feature/add_test' into develop
remove unused option.
Implement config check (whitelist or blacklist)
Refactor filtering logic
refactor log output.
config set for Rails.
output log
modified error content
bug fix.
Bump version '2.2.0'