Show IoU, save anchors to file.Show anchors in the window if used -show

AlexeyAB

2018-03-04 74f98da211d2de6f442304b3829e2458282c286c

 src/layer.h

@@ -34,6 +34,7 @@
    XNOR,
    REGION,
    REORG,
   REORG_OLD,
    BLANK
} LAYER_TYPE;