Shrimp Avocado Salad

If you're looking for something quick, easy and absolutely delicious, this is it!  Perfect combination of flavors, ready in well under 30 minutes and quite hearty.  Enjoy!
-24 oz medium shrimp, cooked, with tails removed
-2 avocados, diced
-2 Tbs red onion, chopped
For dressing:
-1/4 cup extra virgin olive oil
-1/4 cup red wine vinegar
-1/2 tsp garlic powder
-2 tsp dried parsley leaves, or 1 tsp fresh parsley, finely chopped
-1 tsp Dijon mustard
-salt and pepper, to taste
Place shrimp, avocado and onion in large bowl.
In a separate bowl, combine all dressing ingredients.  Mix very well.  Pour over shrimp.  Toss to coat evenly.  Serve and enjoy!