correct readme markdown

Author: adrianorsouza

README.md

@@ -12,7 +12,7 @@ _Note: for 1.7.x support download v2.2 from Downloads tab_
 
 ## Installation
 
-Drag and drop the **application/libraries/Format.php** and **application/libraries/REST_Controller.php** files into your application's directories. To use 'require_once` it at the top of your controllers to load it into the scope. Additionally, copy the **rest.php** file from **application/config** in your application's configuration directory.
+Drag and drop the **application/libraries/Format.php** and **application/libraries/REST_Controller.php** files into your application's directories. To use `require_once` it at the top of your controllers to load it into the scope. Additionally, copy the **rest.php** file from **application/config** in your application's configuration directory.
 
 ## Handling Requests