Builds a release copy and creates a compressed archive.

Include a description of the program, example usage with SSH
instructions, install & uninstall help, and license information.

This tracking file is no longer needed. Finished implementation of the
tasks outlined within, and deciding not to bother with the "maybe"
configuration file task.

Make `main.rs` responsible for only the `main()` function and command
line option handling. Move the actual application code to `lib.rs` for
clearer separation of concerns.

Previously, errors would be returned immediately by the `?`/`try!`s.
Handle errors directly instead of returning them. Otherwise, the stream
listener would terminate, exiting the program, and forcing users to
restart it in order to restore functionality.

When printing errors to STDERR, ensure we're writing newlines to
separate error messages.

Using `expect` seems nicer here because it allows us to provide a more
meaningful error message.