Always print a newline in machine-readable mode.

The machine-readable protocol is line-based, so ensure that we always
print a newline before trying to read input.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add machine-readable password output.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
URL-encode machine-readable outputs.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
README: document machine-readable option.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>