automating my goodybag review process

review.sh

#!/usr/bin/env bash

# ./review.sh [branch id]

#example.
# ./review.sh 1947

if [ "$GITHUB_TOKEN" == "" ] ; then
  echo "Error! You need to set GITHUB_TOKEN environment variable!"
  exit 1
fi

github="https://${GITHUB_TOKEN}:x-oauth-basic@api.github.com/repos/goodybag/cater-api-server/pulls/$1"
branch=$(curl $github | python -c 'import json,sys;obj=json.load(sys.stdin);print obj["head"]["ref"]')

if [ `git branch --list $branch` ] ; then
  git checkout $branch
else
  git checkout -b $branch
fi

git pull origin $branch
exit 1