Clarify the installation steps after bootstrapping

Make it clearer on how to install a boxen from the command line after the
bootstrapping steps are done.
Merge pull request #478 from mattr-/clarify-install

Clarify the installation steps after bootstrapping
remove unused variable
Merge pull request #481 from grosser/grosser/fetch

remove unused variable
comment out old dependency versions of node, ruby
add chrome, iterm2, sublime text
add ignore cache
add init script
update setting
update apps
fix readline of ruby
update package
update init shell
change pow install way
modify comment
add nodejs stuff setting
update manifest
add cyberduck
add for chef
update manifests