Update merchants.yml

New listing for: Esperanto lessons from Kaja kiah.morante@gmail.com

https://www.reddit.com/r/Monero/comments/4jkm2i/esperanto_lessons_looking_for_a_teacher_who_will/d38n6wr

_data/merchants.yml

@@ -52,6 +52,8 @@
   merchants:
     - name: CryptoEscrow Escrow Service
       url: http://www.cryptoescrow.eu
+    - name: Esperanto lessons from Kaja
+      kiah.morante@gmail.com
     - name: MyMonero Web-based Wallet
       url: https://mymonero.com
     - name: Pradeep Atluri, Psychiatrist, New York