docs: Update www.bullion-investor.com/report/ in the showcase

docs/content/showcase/bullion-investor.md

@@ -0,0 +1,22 @@
+---
+date: 2017-02-11T10:30:00+02:00
+description: "German language GOLD REPORT. Tips, tricks, news & glossary on coins, bullion bars and precious-metals investments."
+sitelink: https://www.bullion-investor.com/report/
+tags:
+- 'gold price'
+- blog
+- coins
+- deutschland
+- finance
+- germany
+- gold
+- investment
+- news
+- numismatics
+- palladium
+- platinum
+- report
+- silver
+thumbnail: /img/bullion-investor-com.png
+title: GOLDREPORT — Gold, Silver & Numismatics News
+---