Help with config files

I'm making a simple plugin where you do /donate <rank> and it shows you the information about the rank you inputted. Here is a section of my code: http://pastebin.com/r7ZUE3aU
if you run /donate donator it pulls the string from the config and sends it as a message to the player. My question is, how can i have this string in the config file hold more lines?
So instead of it printing:
this is the donator rank
it prints:
this is the donator rank
- line 2
- line 3

The config file is litearlly just

Code:

donator: This is the donator rank

How would I go about formatting in yml to have multiple lines?

 

You'd need to make the donator have more strings.

p.sendMessage(getConfig().getString("donator");
p.sendMessage(getConfig().getString("donator 2nd line");

 

How would that look in a config file?

Code:

donator: line1
    - line 2
    - line 3

Would this work or no?

 

it would be this in the config

donator:
donatorLine2:

 

If I can't hold multiple lines in one variable how about using a different approach such as using a .txt file to store the info for each rank. Like the way essentials handles the /rules command, Any idea of how I could go about doing this?