Avocado, Mango, Rice Salad

I can't get enough of this salad.  It is a filling, cool summer salad I've been making weekly.  It is good to have in the refrigerator for when you are looking for a snack or a quick meal. 
I don't use measurements when I cook, so here is a rundown of the recipe.  I found it in a Food and Wine Cook Book.


Short Grain Brown Rice
Sliced Mango
Sliced Avocado
Diced Red Onion
Sliced Cilantro
Chopped Grilled Chicken (optional)
Lime Juice
Salt
Pepper