Git branch bash autocomplete *with aliases* (add to .bash_profile)

Git branch bash autocomplete *with aliases*

# To Setup:
# 1) Save the .git-completion.bash file found here:
#    https://github.com/git/git/blob/master/contrib/completion/git-completion.bash
# 2) Add the following lines to your .bash_profile, be sure to reload (for example: source ~/.bash_profile) for the changes to take effect:

#TODO Make bash dir and go to
mkdir ~/.bash && cd ~/.bash

#TODO CURL to get the file
curl -O https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash

# Git branch bash completion
if [ -f ~/.bash/.git-completion.bash ]; then
  . ~/.bash/.git-completion.bash
  
  # Add git completion to aliases
  __git_complete g __git_main
fi

# Make sure you actually have those aliases defined, of course.
alias g="git"