Add a shortcut for :mr weblio-ejje <args>.
Set cool screen saver in Tmux.
Updates on .vmirc.

    * Drop neosnippet.
    * Add emmet-vim plugin (Zen coding for vim).
    * Improve neocomplcache completion settings.
    -------------------
        * Drop unused settings.
        * Smart case completion.
        * Shift-TAB for upgoing completion popup.