Fix typo

Author: kenjis

README.md

@@ -38,7 +38,7 @@ $ composer create-project kenjis/codeigniter-composer-installer codeigniter
 If you want to install translations for system messages (requires shell):
 
 ```
-cd /path/to/codeigniter/
+$ cd /path/to/codeigniter
 $ bin/install-translations.sh
 ```