Improve encfs cookbook

Fix some things, and prepare for path-based activation. Also, comment
the buggy initial dir creation and explain manual provisioning in README
for now.

site-cookbooks/kosmos_encfs/templates/mount_encfs.erb

@@ -1,3 +1,4 @@
 #!/bin/sh
 
 systemd-ask-password --echo "encfs password:" | encfs <%= @encrypted_directory %> <%= @mount_directory %> --public --stdinpass
+echo "Encrypted data directory mounted as <%= @mount_directory %>" > /tmp/data-dir-mounted.txt