sum operation #111
Description
Suddenly finding myself wanting to sum a single column and receive a number back. In this case I want to find the total infrastructure costs for everpix with something like
http://datapipes.okfnlabs.org/csv/sum%209?url=https://raw.github.com/everpix/Everpix-Intelligence/master/External%20Metrics/AWS%20Billing%20from%202012-10.csv