Rename FlattenJson to Attributes (allow plural adapter names)

docs/general/adapters.md

@@ -3,11 +3,11 @@
 AMS does this through two components: **serializers** and **adapters**.
 Serializers describe _which_ attributes and relationships should be serialized.
 Adapters describe _how_ attributes and relationships should be serialized.
-You can use one of the built-in adapters (```FlattenJSON``` is the default one) or create one by yourself, but you won't need to implement an adapter unless you wish to use a new format or media type with AMS.
+You can use one of the built-in adapters (```Attributes``` is the default one) or create one by yourself, but you won't need to implement an adapter unless you wish to use a new format or media type with AMS.
 
 ## Built in Adapters
 
-### FlattenJSON - Default
+### Attributes - Default
 
 It's the default adapter, it generates a json response without a root key.
 Doesn't follow any specifc convention.
@@ -51,7 +51,7 @@ ActiveModel::Serializer.config.adapter = :json_api
 ```
 
 If you want to have a root key for each resource in your responses, you should use the Json or
-JsonApi adapters instead of the default FlattenJson:
+JsonApi adapters instead of the default Attributes:
 
 ```ruby
 ActiveModel::Serializer.config.adapter = :json

docs/general/configuration_options.md

@@ -4,7 +4,7 @@ The following configuration options can be set on `ActiveModel::Serializer.confi
 
 ## General
 
-- `adapter`: The [adapter](adapters.md) to use. Possible values: `:flatten_json, :json, :json_api`. Default: `:flatten_json`.
+- `adapter`: The [adapter](adapters.md) to use. Possible values: `:attributes, :json, :json_api`. Default: `:attributes`.
 
 ## JSON API
 

docs/howto/add_pagination_links.md

@@ -110,6 +110,6 @@ ex.
 }
 ```
 
-### FlattenJSON adapter
+### Attributes adapter
 
 This adapter does not allow us to use `meta` key, due to that it is not possible to add pagination links.

docs/howto/add_root_key.md

@@ -1,6 +1,6 @@
 # How to add root key
 
-Add the root key to your API is quite simple with AMS. The **Adapter** is what determines the format of your JSON response. The default adapter is the ```FlattenJSON``` which doesn't have the root key, so your response is something similar to:
+Add the root key to your API is quite simple with AMS. The **Adapter** is what determines the format of your JSON response. The default adapter is the ```Attributes``` which doesn't have the root key, so your response is something similar to:
 
 ```json
 {