Here's my .profile that I use on my macbook

.profile

#!/bin/sh

export CLICOLOR=1
export LSCOLORS=ExFxCxDxBxegedabagacad

#showing git branches in bash prompt
function parse_git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
}

function proml {
  local         RED="\[\033[0;31m\]"
  local   LIGHT_RED="\[\033[1;31m\]"
  local      YELLOW="\[\033[0;33m\]"
  local LIGHT_GREEN="\[\033[1;32m\]"
  local       WHITE="\[\033[1;37m\]"
  local  LIGHT_GRAY="\[\033[0;37m\]"
  local LIGHT_PURPLE="\[\033[1;34m\]"
  case $TERM in
  xterm*)
  TITLEBAR='\[\033]0;\u@\h:\w\007\]'
  ;;
  *)
  TITLEBAR=""
  ;;
  esac

  PS1="${TITLEBAR}\
  $LIGHT_PURPLE\w$YELLOW\$(parse_git_branch)\
  \n$LIGHT_GRAY\$ "
  PS2='> '
  PS4='+ '
}
proml

# Aliases
alias l='ls -lah'
alias ll='ls -lah'