added some more examples

conf/apps/simple_app/apps.yaml

@@ -1,10 +1,28 @@
 hello_world:
   module: hello
   class: HelloWorld
+  extra: abc123
+  # disable: true
 
 simple_app:
   module: simple
   class: SimpleApp
   extra: 1234
+  priority: 10
+  # dependencies:
+  #   - hello_world
+
+
+base_app:
+  module: simple
+  class: BaseApp
+
+AppA:
+  module: app_a
+  class: AppA
   dependencies:
-    - hello_world
+    - AppB # This is only set to demonstrate forcing it to load after AppB
+
+AppB:
+  module: app_b
+  class: AppB