fixed README.md syntax

Author: mbautista

README.md

@@ -2,14 +2,18 @@
 A simple PHP script to monitor network services
 
 # Install
+```
 cd /opt
 wget http://github.com/ircf/php-monitoring/archive/master.zip
 gunzip master.zip
 cd php-monitoring
 ln -s cron /etc/cron.d/php-monitoring
+```
 
 # Configure
+```
 cd /opt/php-monitoring
 cp config.inc.php-dist config.inc.php
 nano config.inc.php
 # Enter the service names, IP, alert method, and save file
+```