README.md in onnxruntime-0.2.2 vs README.md in onnxruntime-0.2.3

- old
+ new

@@ -18,10 +18,10 @@
 
 Load a model and make predictions
 
 ```ruby
 model = OnnxRuntime::Model.new("model.onnx")
-model.predict(x: [1, 2, 3])
+model.predict({x: [1, 2, 3]})
 ```
 
 > Download pre-trained models from the [ONNX Model Zoo](https://github.com/onnx/models)
 
 Get inputs