added poster PDF and link to poster on website

Author: proycon

docs/poster.pdf

@@ -545,11 +545,12 @@ <h2>Computing with Annotations</h2>
             <a href="assets/stam.webm"><img src="assets/stamvideothumbnail.jpg" alt="stam-tools demo" /></a>
         </div>
         <div class="right">
-            <h2>Demos</h2>
+            <h2>Demos, presentations &amp; Publications</h2>
 
             <ul>
                 <li><a href="assets/stam.webm">This screencast video</a> (no audio) shows <strong>stam-tools</strong>, the command-line tools for STAM</li>
                 <li><a href="https://nbviewer.org/github/annotation/stam-python/blob/master/tutorial.ipynb">Python tutorial "Standoff Text Annotation for Pythonistas"</a> is a tutorial for <strong>stam-python</strong> in the form of an interactive jupyter notebook.</li>
+                <li><a href="https://raw.githubusercontent.com/annotation/stam/master/docs/poster.pdf">Poster</li>
             </ul>
         </div>
     </section>