$ bundle gem happiness-charge-precure
create happiness-charge-precure/Gemfile
create happiness-charge-precure/Rakefile
create happiness-charge-precure/LICENSE.txt
create happiness-charge-precure/README.md
create happiness-charge-precure/.gitignore
create happiness-charge-precure/happiness-charge-precure.gemspec
create happiness-charge-precure/lib/happiness/charge/precure.rb
create happiness-charge-precure/lib/happiness/charge/precure/version.rb
Initializing git repo in /Users/sueyoshi_go/tmp/happiness-charge-precure
$bundle gem happiness_charge_precure
create happiness_charge_precure/Gemfile
create happiness_charge_precure/Rakefile
create happiness_charge_precure/LICENSE.txt
create happiness_charge_precure/README.md
create happiness_charge_precure/.gitignore
create happiness_charge_precure/happiness_charge_precure.gemspec
create happiness_charge_precure/lib/happiness_charge_precure.rb
create happiness_charge_precure/lib/happiness_charge_precure/version.rb
Initializing git repo in /Users/sueyoshi_go/tmp/happiness_charge_precure
ハイフン区切りだとnamespaceになるのか。。。