Update Readme.md - pragma-libs in How to compile

Alexey

2017-01-02 b5938098d12d5c9fe48e7cc71ae3d75b7306833f

 src/gru_layer.c

@@ -85,7 +85,15 @@
    l.z_cpu = calloc(outputs*batch, sizeof(float));
    l.h_cpu = calloc(outputs*batch, sizeof(float));

    l.forward = forward_gru_layer;
    l.backward = backward_gru_layer;
    l.update = update_gru_layer;

#ifdef GPU
    l.forward_gpu = forward_gru_layer_gpu;
    l.backward_gpu = backward_gru_layer_gpu;
    l.update_gpu = update_gru_layer_gpu;

    l.forgot_state_gpu = cuda_make_array(l.output, batch*outputs);
    l.forgot_delta_gpu = cuda_make_array(l.output, batch*outputs);
    l.prev_state_gpu = cuda_make_array(l.output, batch*outputs);