README updated

README.md

@@ -95,6 +95,7 @@ To setup and use the web interface you need to :
 
 * Copy view.php, start.php, config.php in a directory inside your web root
 * Adjust variables in config.php :
+
 ```php
 // name of the package to test
 $package_to_test = "mypkg";
@@ -125,5 +126,6 @@ $nb_threads = 4;
 // (will prefix start.php and view.php in links)
 $base_url = "http://my.server.org/r-package-checker/";
 ```
+
 * Visit http://your.server.org/rcheck/start.php to launch a check.
 * Follow the link given by start.php to view.php to see the real time check progress.