Add git alias for reviewing changes since last pull

Excluding merges.

Signed-off-by: Kare Nuorteva <kare.nuorteva@me.com>
Show whitespace characters in Vim

Signed-off-by: Kare Nuorteva <kare.nuorteva@me.com>
Fix spaces to tabs

Signed-off-by: Kare Nuorteva <kare.nuorteva@me.com>