Add emojis

Author: jason-fox

README.md

@@ -1,6 +1,8 @@
 <h1  align="center">
     <img src="https://fiware.github.io/tutorials.Step-by-Step/img/fiware-farm.png" />
     <img src="https://img.shields.io/badge/NGSI-LD-d6604d.svg" width="90"/>
+    <br/>
+    👨‍🌾 👩‍🌾 🐄 🐐 🐑 🐖 🐔 🌻 🥕 🌽
 </h1>
 
 ## IoT Agents - JSON