title: Could not find FacebookSDK
body: <p>im  just trying to <strong>intall facebook sdk to my phonegap</strong> android project.i followed</p>
  
  <ol>
  <li><a href="https://github.com/phonegap/phonegap-facebook-plugin" rel="nofollow">https://github.com/phonegap/phonegap-facebook-plugin</a></li>
  </ol>
  
  <p>and after intalling fbsdk I have added it under Project</p>
  
  <pre><code>                properties-&gt;Android-&gt;Library 
  </code></pre>
  
  <p>section and select the facebooksdk library Im seeing green color tick mark         infront of the added    library. but when i opened Project again </p>
  
  <pre><code>        properties-&gt;Android window
  </code></pre>
  
  <p>the green tick mark is not displaying under Library section, </p>
  
  <p><strong>instead I'm seeing red cross mark</strong>..i have added <strong>external jar</strong> files also but 
  cant  find out the solutoin.is there any solutions for this ?</p>