Add iwoca as a sponsor to pgloader.

Thanks guys ;-)

docs/sponsors.html

@@ -111,6 +111,35 @@
             author to invest a lot of time in this community project.
           </p>
           <hr />
+          <a href="https://www.iwoca.co.uk">
+            <img class="featurette-image img-responsive"
+                 src="img/iwoca.png"
+                 alt="iwoca">
+          </a>
+          <p class="lead" style="text-align: justify; padding-top: 2em;">
+            Here's what our customer <b><i>Andrea Crotti</i></b> has to
+            say about using and sponsoring <i>pgloader</i>:
+            <blockquote style="text-align: justify;">
+              <p style="font-size: 180%; color: #808080">
+                <i>
+                  Thanks to pgloader we were able to migrate our main
+                  database from from MySQL to Postgres, which involved
+                  moving hundreds of tables used by our complex Django
+                  project.
+                  <br />
+                  Dimitri was very helpful. He implemented a new feature for
+                  us quickly and smoothly.
+                </i>
+              </p>
+            </blockquote>
+          </p>
+          <p>
+            You too can join the sponsor list and have focused development
+            time on pgloader from its developer, consider sponsoring the
+            project: see the <a href="pgloader-moral-license.html">pgloader
+            Moral License</a>.
+          </p>
+          <hr />
           <a href="http://www.fusionbox.com">
             <img class="featurette-image img-responsive"
                  src="img/fb-logo-4d-1000x168.COLOR.png"