~/.xmonad: Use sakura as the default terminal.

.xmonad/xmonad.hs

    kbMap <- newIORef "us"
    xmonad $ defaultConfig {
        modMask  = mod4Mask,
        terminal = "urxvt",
        terminal = "sakura",
        -- Ignore docks (via some WM_* attribute?)
        manageHook = composeAll [
                        manageSpawn,