Cnetextract scrshot (#5584)

* new screenshot for cnetextract

* Revert "Update README's isis test data instructions to be simpler (#5583)"

This reverts commit 33ea3f74.

* Revert "Revert "Update README's isis test data instructions to be simpler (#5583)""

This reverts commit 6725ce6070993ab8a6e671b65ad3c4a4ef878675.

* Revert "new screenshot for cnetextract"

This reverts commit f5c1ec23b2f08c82872568c9b9322776ef93bafb.

* cnetextract update scrshot