Submitting to a conference CFP - Pointers and Preparations - Singapore Ruby Group
Speaker: Grzegorz (@arnvald) Event Page: https://www.meetup.com/Singapore-Ruby-Group/events/236696413/ Produced by Engineers.SG Help us caption & translate this video! http://amara.org/v/30nX/
RubySG 
Grzegorz Witek