This can be appended to .bash_profile it will allow the prompt to display the current branch and branch-status

.bash_git

if tput setaf 1 &> /dev/null; then
	tput sgr0
	if [[ $(tput colors) -ge 256 ]] 2>/dev/null; then
		MAGENTA=$(tput setaf 9)
		ORANGE=$(tput setaf 172)
		GREEN=$(tput setaf 190)
		PURPLE=$(tput setaf 141)
		WHITE=$(tput setaf 256)
	else
		MAGENTA=$(tput setaf 5)
		ORANGE=$(tput setaf 4)
		GREEN=$(tput setaf 2)
		PURPLE=$(tput setaf 1)
		WHITE=$(tput setaf 7)
	fi
	BOLD=$(tput bold)
	RESET=$(tput sgr0)
else
	MAGENTA="\033[1;31m"
	ORANGE="\033[1;33m"
	GREEN="\033[1;32m"
	PURPLE="\033[1;35m"
	WHITE="\033[1;37m"
	BOLD=""
	RESET="\033[m"
fi

function git_info() {
	# check if we're in a git repo
	git rev-parse --is-inside-work-tree &>/dev/null || return

	# quickest check for what branch we're on
	branch=$(git symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')

	# check if it's dirty (via github.com/sindresorhus/pure)
	dirty=$(git diff --quiet --ignore-submodules HEAD &>/dev/null; [ $? -eq 1 ]&& echo -e "*")

	echo $WHITE" on "$ORANGE$branch$dirty
}

PS1="\h:\W\$(git_info) \[$RESET\]\n\u\$ "