README.md in pg_serializable-1.1.0 vs README.md in pg_serializable-1.2.0

@@ -39,26 +39,30 @@
     render 'api/products/index.json.jbuilder'
   end
 end
 ```
 ```shell
-Completed 200 OK in 2521ms (Views: 2431.8ms | ActiveRecord: 45.7ms)
+Completed 200 OK in 2975ms (Views: 2944.2ms | ActiveRecord: 29.9ms)
 ```
 
 Using fast_jsonapi:
 ```ruby
 class Api::ProductsController < ApplicationController
   def index
     @products = Product.limit(200)
                        .order(updated_at: :desc)
                        .includes(:categories, :label, variations: :color)
-    render json: ProductSerializer.new(@products).serialized_json
+    options = {
+      include: [:categories, :variations, :label, :'variations.color']
+    }
+
+    render json: ProductSerializer.new(@products, options).serialized_json
   end
 end
 ```
 ```shell
-Completed 200 OK in 315ms (Views: 0.2ms | ActiveRecord: 50.3ms)
+Completed 200 OK in 542ms (Views: 0.5ms | ActiveRecord: 29.0ms)
 ```
 
 Using PgSerializable:
 ```ruby
 class Api::ProductsController < ApplicationController
@@ -66,18 +70,19 @@
     render json: Product.limit(200).order(updated_at: :desc).json
   end
 end
 ```
 ```shell
-Completed 200 OK in 109ms (Views: 0.2ms | ActiveRecord: 87.1ms)
+Completed 200 OK in 54ms (Views: 0.1ms | ActiveRecord: 43.0ms)
 ```
 
 Benchmarking `fast_jsonapi` against `pg_serializable` on 100 requests:
 ```shell
                       user     system      total        real
-fast_jsonapi     21.510000   0.700000  22.210000 ( 26.994325)
-pg_serializable   1.470000   0.170000   1.640000 (  9.187275)
+jbuilder        175.620000  70.750000 246.370000 (282.967300)
+fast_jsonapi     37.880000   0.720000  38.600000 ( 48.234853)
+pg_serializable   1.180000   0.080000   1.260000 (  4.150280)
 ```
 
 You'll see the greatest benefits from PgSerializable for deeply nested json objects.
 
 ## Installation
@@ -131,11 +136,11 @@
 ```ruby
 attributes :name, :id
 ```
 results in:
 ```json
-[  
+[
   {
     "id": 503,
     "name": "Direct Viewer"
   },
   {
@@ -231,18 +236,19 @@
 ### Associations
 Supported associations:
 - `belongs_to`
 - `has_many`
 - `has_many :through`
+- `has_and_belongs_to_many`
 - `has_one`
 
 #### belongs_to
 ```ruby
 serializable do
   default do
     attributes :id, :name
-    belongs_to: :label
+    belongs_to :label
   end
 end
 ```
 ```json
 [
@@ -268,20 +274,20 @@
 ```ruby
 class Product < ApplicationRecord
   serializable do
     default do
       attributes :id, :name
-      has_many: :variations
+      has_many :variations
     end
   end
 end
 
 class Variation < ApplicationRecord
   serializable do
     default do
       attributes :id, :name
-      belongs_to: :color
+      belongs_to :color
     end
   end
 end
 
 class Color < ApplicationRecord
@@ -390,13 +396,108 @@
       }
     ]
   }
 ]
 ```
+
+#### has_many_and_belongs_to_many
+```ruby
+class Product < ApplicationRecord
+  has_and_belongs_to_many :categories
+
+  serializable do
+    default do
+      attributes :id
+      has_and_belongs_to_many :categories
+    end
+  end
+end
+
+class Category < ApplicationRecord
+  serializable do
+    default do
+      attributes :name, :id
+    end
+  end
+end
+```
+
+```json
+[
+  {
+    "id": 503,
+    "categories": [
+      {
+        "name": "Juliann",
+        "id": 13
+      },
+      {
+        "name": "Teressa",
+        "id": 176
+      },
+      {
+        "name": "Garret",
+        "id": 294
+      }
+    ]
+  },
+  {
+    "id": 502,
+    "categories": [
+      {
+        "name": "Rossana",
+        "id": 254
+      }
+    ]
+  }
+]
+```
+
 #### has_one
-TODO: write examples
 
+```ruby
+class Product < ApplicationRecord
+  has_one :variation
+
+  serializable do
+    default do
+      attributes :name, :id
+      has_one :variation
+    end
+  end
+end
+```
+
+```json
+[
+  {
+    "name": "GPS Kit",
+    "id": 1003,
+    "variation": {
+      "name": "Gottlieb",
+      "id": 4544,
+      "color": {
+        "id": 756,
+        "hex": "67809b"
+      }
+    }
+  },
+  {
+    "name": "Video Transmitter",
+    "id": 1002,
+    "variation": {
+      "name": "Hessel",
+      "id": 4535,
+      "color": {
+        "id": 111,
+        "hex": "144f9e"
+      }
+    }
+  }
+]
+```
+
 ### Association Traits
 Models:
 ```ruby
 class Product < ApplicationRecord
   has_many :variations
@@ -429,10 +530,10 @@
 
 Controller:
 ```ruby
 render json: Product.limit(3).json(trait: :with_variations)
 ```
-
+Response:
 ```json
 [
    {
       "id":1,
       "variations":[