Add Dono To Security (#374) [ci skip]

contents.json

@@ -5146,6 +5146,15 @@
     "description": "NBA stats and standings",
     "license": "mit",
     "source": "https://github.com/jbkuczma/NBAreact"
+  },
+  {
+    "title": "Dono",
+    "category": "security",
+    "description": "Password Derivation Tool",
+    "homepage": "https://dono-app.github.io/",
+    "itunes": "https://itunes.apple.com/app/id1092920229",
+    "source": "https://github.com/dono-app/ios/",
+    "license": "gpl-3.0"
   }
   ]
 }