[python console] Timestamp tutorial provides no output to user

[starfleeth]

https://sandbox.cryptosat.io/#/cryptosat-api/timestamp

Behavior:
When copy pasting the commands from tutorial to console, there is no output or feedback presented to user

Expected:
The user should understand:

1. What is being consumed (the time stamp)
2. That the signature verification was successful.
   The tutorial should print out the timestamp, and print out "True" after the "verify" function.

I believe this could be achieved either by tweaking the tutorial, or the sdk.