added the entities slide content

content/appendix.md

@@ -6,6 +6,7 @@
    [Why the big architectural changes in Drupal 8 - Dries, 2013](http://buytaert.net/why-the-big-architectural-changes-in-drupal-8)
    [The pain before the pay-off - Dries, 2013](http://buytaert.net/why-the-big-architectural-changes-in-drupal-8)
   - Entities
+    [Drupal Fields or Properties](http://www.drupalonwindows.com/en/blog/drupal-fields-or-properties-or-something-else)
   - Modern Drupal 7 site building
  - Custom LMS Drupal 7 architecture
   - Features

content/slide-04.md

@@ -0,0 +1,24 @@
+---
+  - Entities are things in Drupal
+  - Drupal 6 custom things where nodes or custom
+  - Drupal 7 the entity-field system brought the CCK into core without making everything a node
+  - Users, Taxonomy Terms, and Nodes, are all Entities
+  - A bundle is a collection of fields instances on an Entity
+  - A field instance is a place for complex data in a Entity Bundle
+  - A property is simple storage for Entity level data
+  - Properties are linked to an Entity, such as Node. Fields are linked to the Bundle, such as Content Type.
+  - Properties are stored on the entity's table and fields are stored in their own table.
+  - Not all content should entities, fields, or properties. Sometimes a table should just be a table. - BTMash
+---
+
+### Entities
+
+Entities are things in Drupal; things do not have to be nodes.
+
+ - A bundle is a collection of fields instances on an Entity
+ - A field instance is a place for complex data in a Entity Bundle
+ - A property is simple storage for Entity level data
+
+Properties are linked to an Entity, such as Node. Fields are linked to the Bundle, such as Content Type.
+
+Properties are stored on the entity's table and fields are stored in their own table.

outline.yml

@@ -3,7 +3,7 @@
   - slide-01.md # - Outline
   - slide-02.md # - Prolog
   - slide-03.md # - Basic Drupal architecture
-  #   - Entities
+  - slide-04.md #   - Entities
   #   - Modern Drupal 7 site building
   # - Custom LMS Drupal 7 architecture
   #   - Features
@@ -19,4 +19,4 @@
   #   - Development
   #   - Content strategy
   # - Conclusion
-  # - Apendix
+  # - Appendix