Git Global config (~/.gitconfig)

.gitconfig

[color]
        ui = auto
[user]
        name = Alexandre Dumont
        email = adumont@gmail.com
[alias]
  st = status
  ci = commit
  br = branch
  ba = branch -a
  co = checkout
  df = diff
  cl = config -l --local
  lg = log -p
  lol = log --graph --decorate --pretty=oneline --abbrev-commit
  lola = log --graph --decorate --pretty=oneline --abbrev-commit --all
  ls = ls-files
  fdiff = diff-tree --name-status -r
[color "diff"]
    whitespace = red reverse
[core]
#    whitespace=fix,-indent-with-non-tab,trailing-space,cr-at-eol

[branch]
        autosetuprebase = always
# for git version >=1.8 only
#[push]
#        default = simple
[merge]
        tool = vimdiff
[mergetool]
        keepBackup = false
[push]
        default = simple
[core]
        autocrlf = input
[credential]
        helper = cache --timeout=604800

Install with (it will overwrite any existing file!)

wget https://gist.githubusercontent.com/adumont/1380188/raw/.gitconfig -O ~/.gitconfig