My version with tweaks and inspiration from holman/dotfiles

.bash_aliases

export CLICOLOR=1
export LSCOLORS=ExFxBxDxCxegedabagacad
alias ls='ls -GFh'

alias git=hub

alias gis="git status"
alias gits="git status"
alias gitp="git pull"
alias safepull="git stash && git pull && git stash apply"
alias dspurge="sudo find . -name \".DS_Store\" -depth -exec rm {} \;"
alias gituserme='git config user.name "William Ghelfi" && git config user.email trumbitta@gmail.com && cat .git/config | grep -C2 "[user]"'
alias gituserwilliam='git config user.name "William Ghelfi" && git config user.email william@williamghelfi.com && cat .git/config | grep -C2 "[user]"'

.bash_profile OS X

if [ -f /usr/local/Cellar/git/1.9.1/etc/bash_completion.d/git-prompt.sh ]; then
  source /usr/local/Cellar/git/1.9.1/etc/bash_completion.d/git-prompt.sh
fi

if [ -f /usr/local/Cellar/git/1.9.1/etc/bash_completion.d/git-completion.bash ]; then
  source /usr/local/Cellar/git/1.9.1/etc/bash_completion.d/git-completion.bash
fi

# http://henrik.nyh.se/2008/12/git-dirty-prompt
# http://www.simplisticcomplexity.com/2008/03/13/show-your-git-branch-name-in-your-prompt/
#   username@Machine ~/dev/dir[master]$   # clean working directory
#   username@Machine ~/dev/dir[master*]$  # dirty working directory

function parse_git_unpushed {
  local unpushed=`/usr/bin/git cherry -v origin/$(get_git_branch)`
  [[ "$unpushed" != "" ]] && echo "$(tput setaf 1) ++> $(tput sgr0)"
}

function parse_git_dirty {
  git diff --quiet HEAD &>/dev/null
  [[ $? == 1 ]] && echo " $(tput bold)$(tput setaf 3)*$(tput sgr0)"
}

function get_git_branch {
	echo $(__git_ps1 "%s")
}

function parse_git_branch {
  local branch=$(get_git_branch)
  [[ $branch ]] && echo "[$(tput setaf 6)$branch$(tput sgr0)$(parse_git_dirty)]$(parse_git_unpushed)"
}

PS1='${debian_chroot:+($debian_chroot)}\u@\h \w$(parse_git_branch)\n$ '

.bashrc

# http://henrik.nyh.se/2008/12/git-dirty-prompt
# http://www.simplisticcomplexity.com/2008/03/13/show-your-git-branch-name-in-your-prompt/
#   username@Machine ~/dev/dir[master]$   # clean working directory
#   username@Machine ~/dev/dir[master*]$  # dirty working directory

function parse_git_unpushed {
  local unpushed=`/usr/bin/git cherry -v origin/$(get_git_branch)`
  [[ "$unpushed" != "" ]] && echo "$(tput setaf 1) ++> $(tput sgr0)"
}

function parse_git_dirty {
  git diff --quiet HEAD &>/dev/null
  [[ $? == 1 ]] && echo " $(tput bold)$(tput setaf 3)*$(tput sgr0)"
}

function get_git_branch {
	echo $(__git_ps1 "%s")
}

function parse_git_branch {
  local branch=$(get_git_branch)
  [[ $branch ]] && echo "[$(tput setaf 6)$branch$(tput sgr0)$(parse_git_dirty)]$(parse_git_unpushed)"
}

PS1='${debian_chroot:+($debian_chroot)}\u@\h \w$(parse_git_branch)\n$ '

.gitconfig

[user]
        name = William Ghelfi
        email = my@email.it
[github]
        user = username
        token = xyzverylong
[alias]
        lol = log --graph --decorate --pretty=oneline --abbrev-commit
        lola = log --graph --decorate --pretty=oneline --abbrev-commit --all
[color]
        ui = auto
[color "branch"]
        current = yellow reverse
        local = yellow
        remote = green
[color "diff"]
        meta = yellow bold
        frag = magenta bold
        old = red bold
        new = green bold
[color "status"]
        added = yellow
        changed = green
        untracked = cyan
[core]
        excludesfile = /home/user/.gitignore_global