Feta Chip Dip

"One of my cousins shared this recipe.  It is a very easy, quick and delicious dip that can be served at any gathering.  Try it at your next appetizer party or maybe at the big game!"   1 ripe avocado, peeled and diced 2 plum tomatoes, diced 1/4 cup red onion, finely chopped 1 garlic clove, finely minced  1 Tablespoon fresh oregano, finely minced 1 Tabl