git: new alias of `addu`
git: new alias of `addu`

`git addu` corresponds to adding all modified and untracked files, then
removing all deleted files, and finally showing the status.

SBoudrias/dotfiles,Gastove/dotfiles,jorik041/dotfiles,nessthehero/dotfiles,marc0uk/dotfiles,micahwood/linux-dotfiles,seiryu9/dotfiles,intiocean/dotfiles,seiryu9/dotfiles,sdillingham/dotfiles,micahwood/linux-dotfiles,codfish/dotfiles,senorflor/dotfiles,jmyser/dotfiles,nick-thompson/dotfiles,codfish/dotfiles,pmacom/dotfiles,bronxct1/dotfiles,micahwood/linux-dotfiles,Stubby/dotfiles,Stubby/dotfiles,nessthehero/dotfiles,saclark/dotfiles,Wilto/dotfiles,jorik041/dotfiles,zjr/dotfiles-osx,necolas/dotfiles,senorflor/linux-dotfiles,bronxct1/dotfiles,jorik041/dotfiles,SiTaggart/dotfiles,micahwood/linux-dotfiles,micahwood/linux-dotfiles,pertoyra/dotfiles,lgaechter/dotfiles