Sync with the source at 1cdb16b

Author: pavoljuhas

index.html

@@ -98,7 +98,9 @@
  
 <a href="products/diffpycmi/index.html" class="btn btn-large btn-success btn-flat">Get DiffPy-CMI</a>
 &nbsp;
-<a href="acknowledgements.html">Credits</a></p><div class="section" id="diffpy-atomic-structure-analysis-in-python">
+<a href="acknowledgements.html">Credits</a></p><p>Tutorial files for <a class="reference external" href="https://workshops.ill.fr/event/133/page/32-home">ADD2019</a> are at
+<a class="reference external" href="https://github.com/diffpy/add2019-diffpy-cmi">https://github.com/diffpy/add2019-diffpy-cmi</a>.</p>
+<div class="section" id="diffpy-atomic-structure-analysis-in-python">
 <h1>DiffPy - Atomic Structure Analysis in Python<a class="headerlink" href="#diffpy-atomic-structure-analysis-in-python" title="Permalink to this headline">¶</a></h1>
 <p>A free and open source software project to provide python software for
 diffraction analysis and the study of the atomic structure of materials.</p>