commented ruby version for compatibility
commented ruby version for compatibility

Signed-off-by: Holloway, Kean Ho <bbd8faa40b0f348214bf4124b281a301299ba6dd@gmail.com>

hollowaykeanho/airbnb-accessment,lirenyeo/cut-url-sinatra,jylee91/ibilik-accessment,yowchun93/Sinatra_flashcards_v2,anyatan/bitly-clone,dvdhoek/quora-clone,jylee91/ibilik-accessment,hollowaykeanho/ibilik-accessment,macintorch/bitly-clone,ianng89/quora-clone,iamatee/quora_website,WilliamYap3/sinatra-craigslist,hollowaykeanho/airbnb-accessment,garywong79/w4d4-asynchonousform,yowchun93/Sinatra_flashcards_v2,garywong79/w4d1-buildingourfirstwebapp,ianng89/quora-clone,junster90/shorty,hollowaykeanho/sinatra-web-server,hollowaykeanho/quora-clone-demo,alxh87/quora-clone,garywong79/w4d5-production_readiness,garywong79/w4d2-html-css,dvdhoek/quora-clone,garywong79/w4d4-asynchonousform,dvdhoek/bitly-clone,anyatan/bitly-clone,dvdhoek/bitly-clone,garywong79/mudah.my,garywong79/w4d4-jazzingitupwithJquery,alxh87/quora-clone,hollowaykeanho/ibilik-accessment,garywong79/w4d1-buildingourfirstwebapp,benjaminyeo/sinatra-craiglist,benjaminyeo/sinatra-craiglist,garywong79/ibilik,benjaminyeo/sinatra_bnb,macintorch/bitly-clone,garywong79/w4d1-extendingshorturl,junster90/shorty,macintorch/bitly-clone,hollowaykeanho/quora-clone-demo,iamatee/quora_website,benjaminyeo/sinatra_bnb,hollowaykeanho/sinatra-web-server,dvdhoek/bitly-clone,iamatee/quora_website,garywong79/w4d1-extendingshorturl,NextAcademy/quora-clone,garywong79/mudah.my,jylee91/ibilik-accessment,bsjt10/ibilik-accessment,NextAcademy/quora-clone,alxh87/quora-clone,bsjt10/ibilik-accessment,ianng89/quora-clone,NaMusS/mini_quora,dvdhoek/quora-clone,lirenyeo/cut-url-sinatra,NaMusS/mini_quora,garywong79/ibilik,TerryQu3k/BitlyClone,TerryQu3k/BitlyClone,garywong79/w4d2-html-css,anyatan/bitly-clone,garywong79/w4d4-jazzingitupwithJquery,junster90/shorty,garywong79/w4d5-production_readiness,lirenyeo/cut-url-sinatra,WilliamYap3/sinatra-craigslist