Added Kaiserex to Exchange merchants

_data/merchants.yml

@@ -34,6 +34,8 @@
       url: https://www.kraken.com/
     - name: BIT.AC
       url: https://bit.ac/
+    - name: Premium investment and exchange services
+      url: https://www.kaiserex.com/
 - category: Block Explorers
   merchants:
     - name: ChainRadar