README in cheat-1.2.1 vs README in cheat-1.3.0

@@ -17,9 +17,14 @@
 
 To add a cheat sheet, use the --add switch.
 
 $ cheat readme --add
 
+To execute a sheet, use the --execute or -x switch.
+
+$ cheat rspec_rails_install_edge --execute
+$ cheat rspec_rails_install_edge --x
+
 Special Thanks To:
 - Evan Weaver
 - Kevin Marsh
 - Jeremy Apthorp