adding some spin to the visualization

protein_viz.py

@@ -15,6 +15,7 @@ def render_html(pdb_id, chain):
              data-select1="chain:{chain}"
              data-zoomto="chain:{chain}"
              data-style1="cartoon:color=spectrum"
+             data-spin='axis:y;speed:0.2'
              />
         </body>
         </html>