Add 'archive' tag to UitzendingGemist (#2242)

Author: csprasad

contents.json

@@ -9754,7 +9754,7 @@
       "license": "apache-2.0",
       "source": "https://github.com/4np/UitzendingGemist",
       "tags": [
-        "swift"
+        "swift", "archive"
       ],
       "screenshots": [
         "https://cloud.githubusercontent.com/assets/1049693/18724167/ba26d9ba-803b-11e6-9c76-2f44c47d2dee.png"