Adding the minimal memory requirements

Hello, guys

I suggest that you should add a note about the use of memory of drupal.

I recommend you mention that when using all modules, you should change your php.ini's memory_limit to 20M (or whatever it may be, this works for me) and that the usual usage should use xM in this variable.

I recommend somehting like:

Minimal requirement: xM
Recommended: 20M

That's it.

The thing is that I was asking myself for a lot of time... what happened... why did I get a blank screen. This was the cause.

note.- php.ini's default memory_limit is set to 8M

Thank you

ps: It is mentiones on http://drupal.org/node/270