Add Date#thursday? spec
Add Date#thursday? spec

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