README.md in paddle-2.5.2 vs README.md in paddle-2.6.0

@@ -5,11 +5,11 @@
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
-gem "paddle", "~> 2.5"
+gem "paddle", "~> 2.6"
 ```
 
 ## Billing API
 
 For accessing the new Billing API from Paddle. For more info, view the [Paddle Billing](https://www.paddle.com/billing) page.
@@ -356,10 +356,16 @@
       type: "full",
       item_id: "txnitm_anc123"
     }
   ]
 )
+
+# Get a credit note for an adjustment
+# disposition defaults to "attachment"
+# Returns a raw URL. This URL is not permanent and will expire.
+# https://developer.paddle.com/api-reference/adjustments/get-credit-note-pdf
+Paddle::Adjustment.credit_note(id: "adj_abc123", disposition: "inline")
 ```
 
 ### Event Types
 
 ```ruby
@@ -457,9 +463,56 @@
   filters: [
     {name: "updated_at", operator: "lt", value: "2024-04-30"},
     {name: "updated_at", operator: "gte", value: "2024-04-01"}
   ]
 )
+```
+
+### Webhook Simulation Types
+
+Retrieves a list of Simulation Types - https://developer.paddle.com/api-reference/simulation-types/overview
+
+```ruby
+Paddle::SimulationType.list
+```
+
+### Webhook Simulations
+
+```ruby
+# List all simulations
+Paddle::Simulation.list
+Paddle::Simulation.list(status: "archived")
+Paddle::Simulation.list(notification_setting_id: "nftset_abc123")
+
+# Create a simulation
+# https://developer.paddle.com/api-reference/simulations/create-simulation
+Paddle::Simulation.create(notification_setting_id: "ntfset_abc123", name: "Customer Create", type: "customer.completed")
+Paddle::Simulation.create(notification_setting_id: "ntfset_abc123", name: "Subscription Created", type: "subscription_creation")
+
+# Retrieve a simulation
+Paddle::Simulation.retrieve(id: "ntfsim_abc123")
+
+# Update a simulation
+# https://developer.paddle.com/api-reference/simulations/update-simulation
+Paddle::Simulation.update(id: "ntfsim_abc123", name: "Simulation 2")
+Paddle::Simulation.update(id: "ntfsim_abc123", status: "archived")
+
+# List all simulation runs
+Paddle::Simulation.runs(id: "ntfsim_abc123")
+
+# Create a simulation run
+# https://developer.paddle.com/api-reference/simulations/create-simulation-run
+Paddle::SimulationRun.create(simulation_id: "ntfsim_abc123")
+
+# Retrieve a simulation run
+Paddle::SimulationRun.retrieve(simulation_id: "ntfsim_abc123", id: "ntfsimrun_abc123")
+
+# List all simulation run events
+Paddle::SimulationRun.events(simulation_id: "ntfsim_abc123", run_id: "ntfsimrun_abc123")
+
+# Replay a simulation run event
+# https://developer.paddle.com/api-reference/simulations/replay-simulation-run-event
+Paddle::SimulationRunEvent.replay(simulation_id: "ntfsim_abc123", run_id: "ntfsimrun_abc123", id: "ntfsimevt_abc123")
 ```
 
 ## Classic API
 
 For accessing the Paddle Classic API