Improve docs regarding LiveView scope (#115)

Closes #114

Author: odarriba

lib/error_tracker/web.ex

@@ -13,12 +13,20 @@ defmodule ErrorTracker.Web do
 
     ...
 
-    error_tracker_dashboard "/errors"
+    scope "/" do
+      ...
+
+      error_tracker_dashboard "/errors"
+    end
   end
   ```
 
   This will add the routes needed for ErrorTracker's dashboard to work.
 
+  **Note:** when adding the dashboard routes, make sure you do it in an scope that
+  has CSRF protection (usually the `:browser` pipeline in most projects), as
+  otherwise you may experience LiveView issues like crashes and redirections.
+
   ## Security considerations
 
   Errors may contain sensitive information, like IP addresses, users information

lib/error_tracker/web/router.ex

@@ -10,6 +10,9 @@ defmodule ErrorTracker.Web.Router do
 
   It requires a path in which you are going to serve the web interface.
 
+  In order to work properly, the route should be in a scope with CSRF protection
+  (usually the `:browser` pipeline).
+
   ## Security considerations
 
   The dashboard inlines both the JS and CSS assets. This means that, if your