add configuration for Firebase hosting (#1729)

* add configuration for Firebase hosting

* Update history-mode.md

Author: ReneCode

Diff for: docs/en/essentials/history-mode.md

@@ -102,6 +102,24 @@ rewrite {
 }
 ```
 
+#### Firebase hosting
+
+Add this to your `firebase.json`:
+
+```
+{
+  "hosting": {
+    "public": "dist",
+    "rewrites": [
+      {
+        "source": "**",
+        "destination": "/index.html"
+      }
+    ]
+  }
+}
+```
+
 ## Caveat
 
 There is a caveat to this: Your server will no longer report 404 errors as all not-found paths now serve up your `index.html` file. To get around the issue, you should implement a catch-all route within your Vue app to show a 404 page: