GitLab

* Do not use testutil to generate random keys and ids since this is a testing
dependency. Use crypto.GenerateKeyPair() instead.
* Echo full lines
* Improve output by telling the user what to run
* More code comments

License: MIT
Signed-off-by: Hector Sanjuan <hector@protocol.ai>

  * Extended explanations and links to relevant godocs
  * Some renames (the host is not dummy, it's a basic)
  * Use addAddr() and let NewStream open the connection

License: MIT
Signed-off-by: Hector Sanjuan <hector@protocol.ai>