Add spec for Integer#round(half:)
Add spec for Integer#round(half:)

ruby/spec,eregon/rubyspec,ruby/rubyspec,ruby/spec,sgarciac/spec,sgarciac/spec,nobu/rubyspec,sgarciac/spec,nobu/rubyspec,nobu/rubyspec,eregon/rubyspec,ruby/rubyspec,ruby/spec,eregon/rubyspec