Added process scheduling
Added the Bash scripting presentation
Added capabilities info for lecture 03
Added bash documentation
Added lecture notes for Lecture 04
homeworks-04.txt: Added a new homework.
lecture-05: why-vim-is-more-powerfull-then-vi.txt
lecture-notes/lecture-05.txt
Added the bash help sheet
Added the VI cheat sheet
Merge remote-tracking branch 'upstream/master'