update handbook
fix a bug, wrong close tag
use <code> tag to instead of panel div
add <code> tag
add cli(commane line) class in header
update handbook
add og image in header
fix typo
fix typo again
update footer
less padding
update css in header
update handbook, Installation finished.
remove 2 hr tag in index.php
add "Fork me on github", base on "An imageless and responsive "Fork me on GitHub" ribbon"

URL: http://codepo8.github.io/css-fork-on-github-ribbon/
update footer hosting string
index & 404 page fix class jumbotron's height to 813px
update download page
update index
Remove hyperlink's underline