Second thought I think that there is another (and easier) way.
Plug in your SD card, check how it is identified; let's suppose it's /dev/sdx
Then issue following command:
I don't have a SD card at hand but I just tried with an USB key and got this:
bash-4.1$ blkid /dev/sdb1
/dev/sdb1: UUID="4E95-B2D0" TYPE="vfat"
All you have to do is add a line to your /etc/fstab, e.g.:
UUID=4E95-B2D0 /media/USBkey1 vfat noauto,user,rw 0 0
Of course I would need to "mkdir media/USBkey1" first.
Then I can plug in my USB key and type "mount /media/USBkey1" or have it automatically mounted.
I'm not 100% sure this works for a SD card but that's worth trying