Tweak image size on README

README.md

@@ -226,27 +226,18 @@ Fill in the transparent part of an image, or upload a mask with transparent sect
 
 ### Image Variations
 
-Create n variations of an image.
+Create n variations of an image. The size of the generated images must be one of `256x256`, `512x512` or `1024x1024` -
+if not specified the image will default to `1024x1024`.
 
 ```ruby
-    response = client.images.variations(parameters: { image: "image.png", n: 2 })
+    response = client.images.variations(parameters: { image: "image.png", n: 2, size: "256x256" })
     puts response.dig("data", 0, "url")
     => "https://oaidalleapiprodscus.blob.core.windows.net/private/org-Rf437IxKhh..."
 ```
 
 ![Ruby](https://i.ibb.co/TWJLP2y/img-miu-Wk-Nl0-QNy-Xtj-Lerc3c0l-NW.png)
 ![Ruby](https://i.ibb.co/ScBhDGB/img-a9-Be-Rz-Au-Xwd-AV0-ERLUTSTGdi.png)
 
-### Image Size Parameters
-
-The size of the generated images must be one of `256x256`, `512x512` or `1024x1024`
-
-```ruby
-    response = client.images.variations(parameters: { image: "image.png", size: "256x256" })
-    puts response.dig("data", 0, "url")
-    => "https://oaidalleapiprodscus.blob.core.windows.net/private/org-MmU7kHWkvg..."
-```
-
 ### Moderations
 
 Pass a string to check if it violates OpenAI's Content Policy: