Fixed installation script.
Merge branch 'master' of github.com:jalcine/dotfiles

* 'master' of github.com:jalcine/dotfiles:
  Default host name.
  Updated shopt and bash-it.
  Updated bash-it and weechat.
  Reenabling some filtering of commands from history.
  Updated bash-it.
  Updated weechat and bash configuration.
  Updated auto-installation script.
  Updated variables.
  Updated bash-it.