sensu/sensu-community-plugins — pull request #413 by jjasghar (2014-01-09 00:24:23+00:00)
Title: Fixed the getopts with check-swap-percentage.sh

It seems that it only took the "-w" option with the original setup.
Adding the two ":" to the getopts line allows you now to leverage
both -c and -w or just one of them.