better explain secrets folder

[tommybananas]

Do you know that all your private keys are public?

[simon-weber]

Only the ciphertext from https://github.com/elasticdog/transcrypt should be checked in. I double checked now and everything looks ok to me; did you find some plaintext?

[tommybananas]

Just wanted to double check that everything in the /secrets directory was in fact, not a secret.

[simon-weber]

Sounds good. I'll add a readme to that folder so it doesn't look so alarming 👍