Add NiceVPS.net

Fix #360

_data/merchants.yml

@@ -140,6 +140,8 @@
       url: http://www.elisehawkinsnutritionaltherapy.com
     - name: Koddos - hosting and DDoS protection services
       url: http://koddos.net
+    - name: NiceVPS - VPS and web hosting
+      url: https://nicevps.net/
 - category: Goods
   merchants:
     - name: CryptoMercado - coffee and snacks