The beauty of a library is when changing the architecture of a neural network is easy enough to be implemented in the arduino sketch itself.
so with the suggestions by t3db0t on issue (https://github.com/t3db0t/Neuroduino/issues/1) i implemented the architecture of the neural network shown in the link in the issue and VOILA!!! the XOR converged beautifully
the best part about it was that i had to make no changes in the library whatsoever which actually strengthens and validates the need of such a reconfigurable library for neural networks on the arduino

thanks to t3db0t :-)