Update Sinatra doc to use Opal-Sprockets
Update Sinatra doc to use Opal-Sprockets

opal/opal,kachick/opal,opal/opal,opal/opal,Mogztter/opal,kachick/opal,kachick/opal,kachick/opal,Mogztter/opal,Mogztter/opal,Mogztter/opal,iliabylich/opal,opal/opal,iliabylich/opal,iliabylich/opal