install.rdf

<?xml version="1.0"?>
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
     xmlns:em="http://www.mozilla.org/2004/em-rdf#">

  <Description about="urn:mozilla:install-manifest">
  
    <em:id>vlcFFPlugin@mozilla.doslash.org</em:id>
    <em:name>ADST VLC extension for Firefox</em:name>
    <em:version>1.0</em:version>
    <em:description>Play your series directly on Firefox</em:description>
    <em:creator>Fabex</em:creator>
    <!-- optional items -->
    <em:homepageURL>https://github.com/Fabex/vlcFFPlugin</em:homepageURL>
    
    <!-- Firefox -->
    <em:targetApplication>
      <Description>
        <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
        <em:minVersion>3.6</em:minVersion>
        <em:maxVersion>4.0.*</em:maxVersion>
      </Description>
    </em:targetApplication>

  </Description>

</RDF>