title: Should a phonegap plugin be declared in the config.xml file?
body: <p>I am a newbie in phonegap development so I have a couple of questions:</p>
  
  <p>1) I am using the accelerometer plug-in. I read in the manual that i need to declare the plugin in the config.xml file in order to use it. However I noticed that even if i remove the declaration from the config.xml</p>
  
  <pre><code>&lt;feature name="Accelerometer"&gt;
      &lt;param name="android-package" value="org.apache.cordova.AccelListener" /&gt;
  &lt;/feature&gt;
  </code></pre>
  
  <p>the accelerometer still works. </p>
  
  <p>So I would like to ask you if in the phonegap 3.0.0 version , the use of the config.xml is obsolete. If that s the case then where is the binding takes place?</p>
  
  <p>2) I use the android platform to build the app. In the project structure there are three config.xml files with different content:</p>
  
  <ul>
  <li>a) In the assets/www/phonegap-app-hello-world-3.0.0/www/config.xml</li>
  <li>b) In the assets/www/phonegap-app-hello-world-3.0.0/config.xml</li>
  <li>c) In the res/xml/config.xml</li>
  </ul>
  
  <p>What s the use of each one of them ? Where I suppose to declare my plug in?  I did it in the res/xml/config/xml file</p>
  
  <p>Thank you </p>