Update requirements.md (#27)

Improve shared hosting section

docs/requirements.md

@@ -30,16 +30,16 @@ One of the first steps in the installer is to check your server for the proper r
 
 ### Shared Hosting
 
-While shared hosts are not ideal for numerous reasons (don't use free hosts, you'll have
-a really bad time), it's still possible to run phpVMS. Read the
+While shared hosts are not ideal for numerous reasons, it's still possible to run phpVMS.  
+Check especially CRON features/capabilities and hidden limits the provider applies while advertising the service as "limitless". Ram or resource usage limits (like I/O) may directly affect phpVMS and your operations.  
+
+*Don't use free hosts, you'll have a really bad time and they can not be supported.*
 
 ---
 
 ### VPS/Dedicated Hosts
 
-If you have control over your server, the combination of nginx/php-fpm will offer you
-the best performance, over using Apache. It's the combination that I test with.
+If you have control over your server, the combination of nginx/php-fpm will offer you the best performance, over using Apache. It's the combination that I test with.
 It will also be much more secure, seeing that only the `/public` directory is exposed.
 
-Pointing the vhost to the `/public` directory is the best way to run on a host that you
-control.
+Pointing the vhost to the `/public` directory is the best way to run on a host that you control.