I downloaded, extracted (kali-2.0-rpi2.img.xz) and imaged a microsd card for my raspberry pi 2. once the DD was done, I extended the partition with gparted to fill the disk, and then applied the changes. upon boot on the PI 2, the and trying to update/remove the ssh keys, I kept getting errors, apt-get update also failed, when digging in further I discovered the file system was read-only. is there an easy way to change this?

I had no issues with the 1.1.0a image for the PI2.

any help would be appreciated.