Initial test harness.
Add a full end-to-end test for gpg encryption/decryption
Test for invalid data passed to decrypt.
fixed typo
Merge pull request #26 from rvlvvr/test-coverage

Initial test harness.
Added the how to chat section to readme
added distinction between public and public directed chat
Merge pull request #28 from michaelcoyote/master

Added the how to chat section to readme