Added Reservoir Mugs to Merchants

_data/merchants.yml

@@ -225,6 +225,8 @@
       url: https://www.vesp.co/Fungible
     - name: Project Coral Reef Store
       url: http://www.projectcoralreef.com/all-stores
+    - name: Reservoir Mugs - Roasted gourmet coffees, mugs, t-shirts
+      url: https://reservoirmugs.com/
     - name: SecPoint IT Security Products
       url: https://shop.secpoint.com/shop/frontpage.html
     - name: SilverRound.com - Gold and Silver Dealer