Add Tourism New Zealand sponsor logo

Added Tourism New Zealand as a sponsor with logo.

Author: lschriml

pages/sponsors.md

@@ -9,6 +9,7 @@ share-img: /assets/img/
  ![PlatinumSponsor](./images/PlatinumSponsor-500.png)
 
 [ ![ZymoPlatinum](./images/ZymoResearch-yellow-250.jpg) ](https://zymoresearch.eu/)
+[ ![Tourism New Zealand](.images/Tourism-New-Zealand-Logo-Vector.svg) ](https://www.tourismnewzealand.com/)
 
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