diff --git a/README.md b/README.md
index 4069a40..a5f37f5 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,17 @@ Or install it yourself as:
 
 ## Usage
 
-TODO: Write usage instructions here
+### PowerShell Script
+
+    $ winrm-cli script --username joeuser --computer win-01 --password "mypassword" -- "Get-WMIObject Win32_Volume | ft Caption, DirtyBitSet -autosize" 
+
+### CMD
+
+    $ winrm-cli script --username joeuser --computer win-01 --password "mypassword" -- ipconfig
+
+### Getting a back trace
+
+    $ winrm-cli --trace
 
 ## Contributing
 
diff --git a/bin/winrm-cli b/bin/winrm-cli
index 7ed689c..733a2bb 100755
--- a/bin/winrm-cli
+++ b/bin/winrm-cli
@@ -77,6 +77,10 @@ command :script do |c|
 
   c.action do |args, options|
     script = ARGV.join(" ").split(' -- ',2)[1]
+    if !script
+      $stderr.puts "no script supplied"
+      exit 1
+    end
     # create a session
     session = EventMachine::WinRM::Session.new(:log_level => :info)
     opts = {:user => options.username, :password => options.password, :basic_auth_only => basic_auth?(options.username),  :operation_timeout => 1800, :disable_sspi => true}