Issue-244 i: Optimizer receives selected model as kwargs. Optimizatio…

…n routine did not accept selected model.

GPyOpt/methods/bayesian_optimization.py

@@ -137,8 +137,9 @@ def __init__(self, f, domain = None, constraints = None, cost_withGradients = No
         # --- CHOOSE the acquisition optimizer_type
 
         # This states how the discrete variables are handled (exact search or rounding)
+        kwargs.update({ 'model' : self.model })
         self.acquisition_optimizer_type = acquisition_optimizer_type
-        self.acquisition_optimizer = AcquisitionOptimizer(self.space, self.acquisition_optimizer_type, model=self.model)  ## more arguments may come here
+        self.acquisition_optimizer = AcquisitionOptimizer(self.space, self.acquisition_optimizer_type, **kwargs)  ## more arguments may come here
 
         # --- CHOOSE acquisition function. If an instance of an acquisition is passed (possibly user defined), it is used.
         self.acquisition_type = acquisition_type