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>scihubfox@sci-hub.io</em:id>
    <em:name>Sci-hub extension</em:name>
    <em:version>3.0</em:version>
    <em:description>Appends sci-hub url: sci-hub.io, to the current URL, which usually redirects to the Captcha before downloading the article. Tested for pubmed and science direct. Please note that using sci-hub in your country may be iligal, please use at your own risk!</em:description>
    <em:creator>Leonardo Barbosa</em:creator>
    <!-- optional items -->
    <em:homepageURL>https://github.com/noreun/scihubfox.git</em:homepageURL>
    <!--em:optionsURL>chrome://sampleext/content/settings.xul</em:optionsURL>
    <em:aboutURL>chrome://sampleext/content/about.xul</em:aboutURL>
    <em:iconURL>chrome://sampleext/skin/mainicon.png</em:iconURL>
    <em:updateURL>http://sampleextension.mozdev.org/update.rdf</em:updateURL-->

    <!-- Firefox -->
    <em:targetApplication>
      <Description>
        <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
        <em:minVersion>3.6</em:minVersion>
        <em:maxVersion>45.*</em:maxVersion>
      </Description>
    </em:targetApplication>

  </Description>

</RDF>