Shrimp Tacos with Avocado and Mango Salsa Recipe

Name: Shrimp Tacos with Avocado and Mango Salsa Recipe
Ingredients: ½ ripe mango (use the rest for mango margaritas or something delicious), diced; ½ scallion, light green and green parts only; ½ jalapeño, diced; Juice of ½ lime; 3 sprigs cilantro, chopped; Salt and fresh black pepper; 12 peeled and deveined shrimp; 2 or 3 pinches of cayenne; 1 ½ tablespoons olive oil; 4 corn or flour tortillas; ½ ripe avocado, sliced thinly, for garnish