README.md in vagrant-shell-commander-0.1.3 vs README.md in vagrant-shell-commander-0.1.4

@@ -13,18 +13,18 @@
 
 ## Usage
 
 To execute a command on all the machines:
 
-    $ vagrant sh -c 'free'
+    $ vagrant sh -c free
 
 Restrict the machine to run:
 
-    $ vagrant sh -c 'free' machine1
+    $ vagrant sh -c free machine1
 
-Specify the working directory:
+Specify the working directory (remember to quote multiword commands):
 
-    $ vagrant sh -c 'ls -al' -d '/srv/www'
+    $ vagrant sh -c 'ls -al' -d /srv/www
 
 Get help:
 
     $ vagrant sh -h