removed old belfast-6 examples
add link to Max's Dropbox
change description of example 6
KERNEL: if a kernel is invalid give an error!
belfast-2 and belfast-5 corrected
Typo
Typos
belfast 8 and 9a
Working on tutorial 4
KERNEL: if a kernel is invalid give an error!

(cherry picked from commit 5102dc330e1f65f752e72794d1355f710e43c160)
Merge branch 'v2.0' into belfast