Update for training

Edmond Yoo

2018-09-14 8eb0d400e80f3dd135313834ce103bd0f9e62dbc

 src/layer.h

@@ -179,6 +179,11 @@
    float *weights;
    float *weight_updates;

    char *align_bit_weights;
    float *mean_arr;
    int lda_align;
    int bit_align;

    float *col_image;
    int   * input_layers;
    int   * input_sizes;