xmobarrc: added widgets weather, volume & mpd.
xmobarrc.

  Changed color of widget name for volume, weather & mpd.
xinitrc: Run leechcraft at startup.
Xmonad.hs, Xresources: added ncmpc hotkey + xresource entry.
Updated readme.
Use mod1 as mod key in xmonad.

Because steelseries 7g has bad position of mod4 key.
Revert "Use mod1 as mod key in xmonad."

This reverts commit 503ab861585dd6a390c98ffa0a8cd5e3a0106eb0.
Updated tmux-dashboard for desktop.
XMonad.hs: add mpv to list of floating clients.
tmux.sh: renamed window mplayer -> media.