I was able to make sshfs mount via fstab with Ubuntu 14.04 by doing using the following syntax as a standard user (note anything in CAPS is a variable for you to fill in):
This is a combination of the information found here http://superuser.com/questions/669287/automount-sshfs-using-fstab-without-mount-a and adding the **delay_connect** from here http://askubuntu.com/questions/326977/sshfs-is-not-mounting-automatically-at-boot-despite-etc-fstab-configuration.
I used this tutorial to get my USER_ID and USER_GID: https://kb.iu.edu/data/adwf.html
To find a user’s UID or GID in Unix, use the id command. To find a specific user’s UID, at the Unix prompt, enter:
Replace username with the appropriate user’s username. To find a user’s GID, at the Unix prompt, enter: