Intro
Getting a timestamp like Rails migration
Time.now.utc.to_formatted_s(:number) # using Rails
Time.now.utc.strftime("%Y%m%d%H%M%S") # using Ruby
Time.now.utc.to_formatted_s(:number) # using Rails
Time.now.utc.strftime("%Y%m%d%H%M%S") # using Ruby