message: Minor correction in instruction
diff: @@ -62,9 +62,9 @@ python ngtf_graph_viewer.py -h
  ### Some commandline samples/usecases
  * pbtxt to TB: ```python ngtf_graph_viewer.py pbtxtfile.pbtxt ./vis```
  -* pbtxt to dot: ```python ngtf_graph_viewer.py -v 1 pbtxtfile.pbtxt ./vis```
  +* pbtxt to dot: ```python ngtf_graph_viewer.py -v 0 pbtxtfile.pbtxt ./vis```
  * pb to TB: ```python ngtf_graph_viewer.py -b pbtxtfile.pb ./vis```
  -* pb to dot: ```python ngtf_graph_viewer.py -b -v 1 pbtxtfile.pb ./vis```
  +* pb to dot: ```python ngtf_graph_viewer.py -b -v 0 pbtxtfile.pb ./vis```
  * pbtxt to TB after prepending cluster information. See **Visualizing encapsulates using TB**: ```python ngtf_graph_viewer.py -c nodemap.pkl pbtxtfile.pbtxt ./vis```
  