Quickstart fix

README.md

@@ -177,6 +177,12 @@ class TurnDetector:
 
         return predicted_label, confidence
 
+    def _softmax(self, x, axis=None):
+        if axis is None:
+            axis = -1
+        exp_x = np.exp(x - np.max(x, axis=axis, keepdims=True))
+        return exp_x / np.sum(exp_x, axis=axis, keepdims=True)
+
 # --- Example Usage ---
 if __name__ == "__main__":
     detector = TurnDetector()