add scale generator to config.json
add scale generator to config.json

tommyschaefer/xruby,dalexj/xruby,samilokan/xruby,rashmiagar/exercism,remcopeereboom/xruby,Insti/exercism-ruby,wobh/xruby,NobbZ/xruby,NeimadTL/ruby,kotp/xruby,Insti/xruby,jdsayle/xruby,samilokan/xruby,Calvyn82/word_count,NeimadTL/ruby,NobbZ/xruby,darrencauthon/xruby,Calvyn82/xruby,dalexj/xruby,NeimadTL/ruby,mamenama/xruby,Insti/exercism-ruby,exercism/xruby,kickinbahk/xruby,kickinbahk/xruby,kotp/xruby,jdsayle/xruby,tommyschaefer/xruby,alexbrinkman/xruby,gchan/xruby,exercism/xruby,alexbrinkman/xruby,wobh/xruby,rashmiagar/exercism,Calvyn82/xruby,mamenama/xruby,gchan/xruby,darrencauthon/xruby,Insti/exercism-ruby,remcopeereboom/xruby,Calvyn82/word_count,Insti/xruby