Update Serializers and Rendering Docs

- Updating general/serializers.md
- Updating docs/general/rendering.md
- adding to changelog
- Updating rendering.md to indicate that `each_serializer` must be used on a collection
- updating my handle in previous changelog entry

docs/general/rendering.md

@@ -203,7 +203,7 @@ link(:link_name) { url_for(controller: 'controller_name', action: 'index', only_
 
 #### include
 
-PR please :)
+See [Adapters: Include Option](/docs/general/adapters.md#include-option).
 
 #### Overriding the root key
 
@@ -260,15 +260,29 @@ Note that by using a string and symbol, Ruby will assume the namespace is define
 
 #### serializer
 
-PR please :)
+Specify which serializer to use if you want to use a serializer other than the default.
+
+For a single resource:
+
+```ruby
+@post = Post.first
+render json: @post, serializer: SpecialPostSerializer
+```
+
+To specify which serializer to use on individual items in a collection (i.e., an `index` action), use `each_serializer`:
+
+```ruby
+@posts = Post.all
+render json: @posts, each_serializer: SpecialPostSerializer
+```
 
 #### scope
 
-PR please :)
+See [Serializers: Scope](/docs/general/serializers.md#scope).
 
 #### scope_name
 
-PR please :)
+See [Serializers: Scope](/docs/general/serializers.md#scope).
 
 ## Using a serializer without `render`
 

docs/general/serializers.md

@@ -382,11 +382,26 @@ The serialized value for a given key. e.g. `read_attribute_for_serialization(:ti
 
 #### #links
 
-PR please :)
+Allows you to modify the `links` node. By default, this node will be populated with the attributes set using the [::link](#link) method. Using `links: nil` will remove the `links` node.
+
+```ruby
+ActiveModelSerializers::SerializableResource.new(
+  @post,
+  adapter: :json_api,
+  links: {
+    self: {
+      href: 'http://example.com/posts',
+      meta: {
+        stuff: 'value'
+      }
+    }
+  }
+)
+```
 
 #### #json_key
 
-PR please :)
+Returns the key used by the adapter as the resource root. See [root](#root) for more information.
 
 ## Examples