add lab3 dir
update README.txt
add github setup
Merge branch 'lab3pre' of github.com:yanluo-uml/micro2 into lab3pre
updates to README
remove .swp
updates to README
Change file name to image-full.bb
Change a typo that makes compile fail
Fix the error when compiling hello-mod.ko
Change hello.c back to the original version
add lab3.pdf