trailing "/" in mountpoint option is not handled properly

[ghost]

If --mountpoint is specified by the user with a trailing slash (i.e. /scratch/ instead of /scratch), then the following command in bin/ebs-autoscale:

curr_size=$(df -BG ${MOUNTPOINT} | grep ${MOUNTPOINT} | awk '{print $2} ' | cut -d'G' -f1)

fails because grep does not find the ${MOUNTPOINT} string.
I suggest trailing "/"s should be automatically trimmed from --mountpoint.
Thanks!