chore(docs) Add new example production site

Author: bostrom

Diff for: README.md

@@ -164,6 +164,7 @@ Each time, there're more Production WebApps using `Restangular`. If your webapp
 * **Life360** is using Restangular to build the WebApp version of their platform
 * **Thomson Reuters** is using Restangular for the new Webapp they've built
 * **Quran.com** is using Restangular for their alpha/beta app and soon to be main site
+* **[ENTSO-E Transparency Platform](https://transparency.entsoe.eu)**
 
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