Add howto pdf files
Add "new way" to "Install the Linux kernel source".
https://code.google.com/p/kgtp/wiki/HOWTO#New_way
https://code.google.com/p/kgtp/wiki/HOWTOCN#新方法
Fix a wrong line.
Fix https://github.com/teawater/kgtp/issues/2
Thanks report from Brad Dixon.
Update UPDATE for prev commit
Merge branch 'master' into uprobes