code: function executeChildProcess (fileName, args, options) {
    return new Promise((resolve, reject) => {
      const child = require('child_process').spawn(fileName, args, options)
  
      child.stdout.on('data', (data) => log(data.toString()))
      child.stderr.on('data', (data) => log(data.toString()))
  
      child.on('exit', (code) => {
        if (code !== 0) {
          return reject(new Error(fileName + ' exited with code: ' + code))
        }
        return resolve()
      })
  
      child.stdin.end()
    })
  }
docs: Starts a child process using the provided executable
  
  @param fileName      - Path to the executable to start
  @param args          - Arguments for spawn
  @param options       - Options passed to spawn
  @returns {Promise}   - A promise that resolves when the
  process exits