contact solver: adding images

Author: quentinll

Diff for: README.md

@@ -0,0 +1,4 @@
+# Simple Robotics
+
+Website of the [Simple Robotics](https://github.com/Simple-Robotics) organization.
+

Diff for: publications/simple-contact-solver/index.html

@@ -179,6 +179,16 @@ <h2 class="title is-3">Abstract</h2>
       </div>
     </div>
     <!--/ Abstract. -->
+     <!-- Benchmarks. -->
+     <div class="columns is-centered has-text-centered">
+      <div class="column is-four-fifths">
+        <h2 class="title is-3">Benchmarks</h2>
+        <div class="content has-text-justified">
+          <embed src="images/cassie.pdf" alt="Computational time for Cassie robot.">
+        </div>
+      </div>
+    </div>
+    <!--/ Benchmarks. -->
   </div>
 </section>