title: Sugar ORM blocking UI Thread on init
body: <p>I'm using Sugar ORM in Version 1.3.1 for my android 5.1 app. </p>
  
  <p>Today, i noticed after installing my app that Sugar ORM is blocking the UI Thread for initialization for about 2.4 seconds. </p>
  
  <p>Is there a way to get this stuff done in a background thread to improve the UX?</p>
  
  <pre><code>04-07 20:14:42.179  10407-10407/com.sample.app I/Sugar﹕ on create
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  04-07 20:14:44.506  10407-10407/com.sample.app I/Sugar﹕ create table
  04-07 20:14:44.506  10407-10407/com.sample.app D/Sugar﹕ Fetching properties
  04-07 20:14:44.507  10407-10407/com.sample.app I/Sugar﹕ creating table ARTICLE
  </code></pre>