title: Lawnchair indexing problems
body: <p>I'm trying out Lawnchair but the documentation is sparse, to say the least. Here are a few questions:  </p>
  
  <p>1) How do I order a list of stored objects? Or, to put in another way, how do I define an index for the objects?  </p>
  
  <p>2) Is there any way to have more than one key?</p>
  
  <p>Also, does anyone know another cross-platform (IndexedDB + WebSQL) database framework? persistence.js doesn't cut it since it requires Google Gears on Firefox.</p>