Added support for custom data with png image files

Rakesh Jasti

2017-04-26 c3b9e4453884f9e44761987fce3b9c6a3dae447b

 src/layer.h

@@ -120,6 +120,7 @@
    int random;
    float thresh;
    int classfix;
    int absolute;

    int dontload;
    int dontloadscales;