Adjustment of second module

Create a new class "GRN". And repeal class "Alignment" for simplicity. Hence the second module has two class: Sequence and GRN.
The input of second module are:
1. Old GRN correlation matrix;
2.The matrix size;
3. Sequence array of all old gene plus the new one.
The output of second module is:
1. New GRN correlation matrix.