Added pattern to script execution help

Signed-off-by: Emmanuel Bigeon <emmanuel@bigeon.fr>

gclc/src/main/java/fr/bigeon/gclc/command/ScriptExecution.java

@@ -186,6 +186,13 @@ public class ScriptExecution extends Command {
         return builder.toString();
     }
 
+    /* (non-Javadoc)
+     * @see fr.bigeon.gclc.command.Command#usagePattern() */
+    @Override
+    protected String usagePattern() {
+        return super.usagePattern() + " <scriptfile>";
+    }
+
     /* (non-Javadoc)
      * @see fr.bigeon.gclc.command.ICommand#tip() */
     @Override