title: Lawnchair javascript data "get" does not let me assign into another variable
body: <p>I am using Lawnchair to save data in js and retrieve it back for my mobile app.</p>
  
  <p>I have this in my js file.</p>
  
  <pre><code>$(document).ready(function() {
  
      //Lawchair set up
      db = Lawnchair({name: 'db'},function(e){
        console.log('storage open');
      });
  
      //store the 'username' key in storage
      db.save({key:"username", value: "john"});
  
      var name = ""
      db.get("username", function(obj){
              name = obj.value;
      })
  
      alert(name);
  
  });
  </code></pre>
  
  <p>The problem is I always get "" in the name. I can never set any variable inside the callback function of "get" from Lawnchair object. Am I missing something? </p>
  
  <p>Any help would be appreciated.</p>
  
  <p>Thanks.</p>