Update documentation on generating exercise readmes
Update documentation on generating exercise readmes

NeimadTL/ruby,exercism/xruby,Insti/xruby,NeimadTL/ruby,exercism/xruby,Insti/exercism-ruby,Insti/exercism-ruby,Insti/exercism-ruby,NeimadTL/ruby,Insti/xruby