title: AsyncStorage - Is multiSet() transactional?
body: <p>I have an app where I plan on pulling some data from my server and then store that data using AsyncStorage. So there won't be a need to constantly fetch my data.
  I fetch a couple of jsons using <code>fetch()</code> and then store them using <code>AsyncStore.multiSet()</code>.  </p>
  
  <p>However, if there is a problem storing one of my, about 5 json objects in AsyncStorage I do not wish to store any of them. To keep the data in a correct state. Therefor I would like to store them using a transaction.  </p>
  
  <p>So what would happen if in the middle of storing my objects there is some problem and the storing fails. For instance if the app was closed by the user or if their battery runs out.  </p>
  
  <p>What would happen in a scenario like that? Could my first 2 objects be saved and the other 3 not be saved?</p>