Addition of Web Developer to Merchants

_data/merchants.yml

@@ -54,6 +54,8 @@
       url: http://www.cryptoescrow.eu
     - name: Esperanto lessons from Kaja
       url: mailto:kiah.morante@gmail.com
+    - name: Web Developer - Stefanos
+      url: http://www.stefanosioannou.com/web-development-monero-accepted
     - name: MyMonero Web-based Wallet
       url: https://mymonero.com
     - name: Pradeep Atluri, Psychiatrist, New York