Add note about email clients

package.json

@@ -1,6 +1,6 @@
 {
     "name": "about",
-    "version": "1.1.0",
+    "version": "1.1.1",
     "description": "All about Felix W. Dekker",
     "author": "Felix W. Dekker",
     "browser": "dist/bundle.js",

src/main/index.html

@@ -53,6 +53,7 @@
                 Just email me at <kbd>felix</kbd> at this very domain.
                 My PGP key is hosted at the web key directory on this domain.
                 That is, just run <code>gpg --locate-key &lt;my-email-address&gt;</code> to get the key.
+                Email clients supporting PGP will do that automatically.
                 The fingerprint is <code>1729 EB23 E77D 56F8 DC53 A4EE B1B5 67AF 58D6 EE0F</code>.
             </p>
         </section>