Add some helpful configuration info to README.md (#59)

README.md

@@ -27,9 +27,10 @@ Ensure your apis are configured in `config.exs`
 config :my_app, ash_apis: [MyApp.Foo, MyApp.Bar]
 ```
 
-Add the admin extension to each api you want to show in the admin dashboard, and configure it to show
+Add the admin extension to each api you want to show in AshAdmin dashboard, and configure it to show. See [`AshAdmin.Api`](https://hexdocs.pm/ash_admin/AshAdmin.Api.html) for more configuration options.
 
 ```elixir
+# In your Api(s)
 use Ash.Api,
   extensions: [AshAdmin.Api]
 
@@ -38,7 +39,19 @@ admin do
 end
 ```
 
-Modify your router to add ash admin at whatever path you'd like to serve it at.
+Resources in each Api will be automagically included in AshAdmin. See [`AshAdmin.Resource`](https://hexdocs.pm/ash_admin/AshAdmin.Resource.html) for more resource  configuration options. Specifically, if you app has an actor you will want to configure that. Ash Admin allows you to change actors and therefore doesn't rely on `Ash.set_actor`
+
+```elixir
+# In your resource that acts as an actor (e.g. User)
+use Ash.Resource,
+  extensions: [AshAdmin.Resource]
+
+  admin do
+    actor?(true)
+  end
+```
+
+Modify your router to add AshAdmin at whatever path you'd like to serve it at.
 
 ```elixir
 defmodule MyAppWeb.Router do
@@ -60,6 +73,8 @@ defmodule MyAppWeb.Router do
 end
 ```
 
+**Note: there is no builtin security for your AshAdmin (except your apps normal policies). In most cases you will want to secure your AshAdmin routes in some way to prevent them from being public**
+
 Now start your project (usually by running `mix phx.server` in a terminal) and visit `/admin` in your browser (or whatever path you gave to `ash_admin` in your router).
 
 ### Content Security Policy
@@ -84,6 +99,10 @@ This will allow AshAdmin-generated inline CSS and JS blocks to execute normally.
 
 See the documentation in [`AshAdmin.Resource`](https://hexdocs.pm/ash_admin/AshAdmin.Resource.html) and [`AshAdmin.Api`](https://hexdocs.pm/ash_admin/AshAdmin.Api.html) for information on the available configuration.
 
+## Troubleshooting
+
+If your Admin UI is not responding as expected. Check your browser's developer console for content-security-policy violations (see above).
+
 ## Development
 
 To work on ash_admin, you'll want to be able to run the dev app. You'll need to have postgres setup locally, at which point you can do the following: