README.md in netprint-0.1.1 vs README.md in netprint-0.2.0

@@ -45,9 +45,24 @@
   :secret_code => '1234',
   :email       => '[e-mail]'
 })
 ```
 
+### CLI
+
+```
+$ netprint --help
+Usage:
+  netprint [--user=<userid:password>] [--email=<email>] [--secret=<secret>] <filename>
+  netprint -h | --help
+
+Options:
+  -h --help                    Show this screen.
+  -v --version                 Show version information.
+  -u --user=<userid:password>  User account. If not specified, ENV['NETPRINT_(USERID|PASSWORD)'] is used.
+  -e --email=<email>           Email address to notify. If not specified, ENV['NETPRINT_EMAIL'] is used.
+  -s --secret=<secret>         Secret code.
+```
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)