function updatePackageJSON(props) {
  const packageJSON = JSON.parse(fs.readFileSync('./package.json'))
  const updatedPackageJSON = JSON.stringify(deepMerge(packageJSON, props), null, '  ')
  return fs.writeFileSync('./package.json', `${updatedPackageJSON}\n`)
}
Update the projects version number
@param  {Object} version
@return {Buffer} updated file