Adding dependencies to bundle

rake, asciidoctor, coffee-script, rb-inotify, kramdown, uglifier,
htmlcompressor

Signed-off-by: Conrad Gomes <conrad.s.j.gomes@gmail.com>
Following https://github.com/graphitefriction/oscon-2013-docs-workshop/blob/master/awestruct-asciidoc-tutorial.adoc

Signed-off-by: Conrad Gomes <conrad.s.j.gomes@gmail.com>
After completing steps till http://mojavelinux.github.io/decks/docs-workshop/oscon2013/index.html#86.0

Signed-off-by: Conrad Gomes <conrad.s.j.gomes@gmail.com>