[XMonad] Set wallpaper.

Change-Id: I01fd73377d208c8e71ad2e35a1adac21baa46c7e
Signed-off-by: Wei-Chung Wen <morisato3711@gmail.com>
[Bash] Add custom git to path.

Change-Id: I08410f6cd5f6996564b0bd96c5bd29cc2b41810f
Signed-off-by: Wei-Chung Wen <morisato3711@gmail.com>