This script creates a new repo on github.com, then pushes to it the local repo from the current directory. Fork of https://gist.github.com/robwierzbowski/5430952/. Some of Rob's lines just didn't work for me, and I made it more verbose while fixing. UPDATE 2017-06-30. No longer needed by Xcode users because this capability is built into Xcode 9 :)

gitcreate.sh

#!/bin/bash
 
# This script create a new repo on github.com, then pushes the local repo from the current directory to the new remote.

# It is a fork of https://gist.github.com/robwierzbowski/5430952/.  Some of Rob's lines just didn't work for me, and to fix them I needed to make it more verbose so that a mere electrical engineer could understand it.

# This script gets a username from .gitconfig.  If it indicates that your default username is an empty string, you can set it with
# git config --add github.user YOUR_GIT_USERNAME

# Gather constant vars
CURRENTDIR=${PWD##*/}
GITHUBUSER=$(git config github.user)
 
# Get user input
echo "Enter name for new repo, or just <return> to make it $CURRENTDIR"
read REPONAME
echo "Enter username for new, or just <return> to make it $GITHUBUSER"
read USERNAME
echo "Enter description for your new repo, on one line, then <return>"
read DESCRIPTION
echo "Enter <return> to make the new repo public, 'x' for private"
read PRIVATE_ANSWER

if [ "$PRIVATE_ANSWER" == "x" ]; then
  PRIVACYWORD=private
  PRIVATE_TF=true
else
  PRIVACYWORD=public
  PRIVATE_TF=false
fi

REPONAME=${REPONAME:-${CURRENTDIR}}
USERNAME=${USERNAME:-${GITHUBUSER}}

echo "Will create a new *$PRIVACYWORD* repo named $REPONAME"
echo "on github.com in user account $USERNAME, with this description:"
echo $DESCRIPTION
echo "Type 'y' to proceed, any other character to cancel."
read OK
if [ "$OK" != "y" ]; then
  echo "User cancelled"
  exit
fi

# Curl some json to the github API oh damn we so fancy
curl -u $USERNAME https://api.github.com/user/repos -d "{\"name\": \"$REPONAME\", \"description\": \"${DESCRIPTION}\", \"private\": $PRIVATE_TF, \"has_issues\": true, \"has_downloads\": true, \"has_wiki\": false}"
 
# Set the freshly created repo to the origin and push
# You'll need to have added your public key to your github account
git remote add origin https://github.com/$USERNAME/$REPONAME.git
git push -u origin master

I used two-factor authentication. Any idea to add this too?

Wow. I didn't know github was doing two-factor. Sorry, I have no plans to do that.

Any more info about xcode integration? I can't find any docs on it.