Display donate button if field exists

Author: kmturley

components/details.tsx

@@ -89,6 +89,11 @@ const Details = ({ downloads, pkg, pkgVersion, type }: DetailsProps) => (
               <a href={pkgVersion.url} target="_blank">
                 <button className="button button-clear">View source</button>
               </a>
+              {pkgVersion.donate ? (
+              <a href={pkgVersion.donate} target="_blank">
+                <button className="button button-clear">Donate</button>
+              </a>
+              ) : ''}
             </div>
           </div>
         </div>