docs/Tier.md in talon_one-5.0.0 vs docs/Tier.md in talon_one-6.0.0

@@ -4,19 +4,21 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **id** | **Integer** | The internal ID of the tier. | 
 **name** | **String** | The name of the tier. | 
+**start_date** | **DateTime** | Date and time when the customer moved to this tier. This value uses the loyalty program's time zone setting. | [optional] 
 **expiry_date** | **DateTime** | Date when tier level expires in the RFC3339 format (in the Loyalty Program's timezone). | [optional] 
-**downgrade_policy** | **String** | Customers's tier downgrade policy. - `one_down`: Once the tier expires and if the user doesn't have enough points to stay in the tier, the user is downgraded one tier down. - `balance_based`: Once the tier expires, the user's tier is evaluated based on the amount of active points the user has at this instant.  | [optional] 
+**downgrade_policy** | **String** | The policy that defines how customer tiers are downgraded in the loyalty program after tier reevaluation.  - `one_down`: If the customer doesn't have enough points to stay in the current tier, they are downgraded by one tier.  - `balance_based`: The customer's tier is reevaluated based on the amount of active points they have at the moment.  | [optional] 
 
 ## Code Sample
 
 ```ruby
 require 'TalonOne'
 
 instance = TalonOne::Tier.new(id: 11,
                                  name: bronze,
+                                 start_date: null,
                                  expiry_date: null,
                                  downgrade_policy: null)
 ```