Jerk Shrimp with Grilled Onion

Ingredients     1 mango, peeled and finely chopped     1/2 avocado, finely chopped $     1/4 cup finely chopped red bell pepper $     2 tablespoons chopped fresh cilantro     1 tablespoon fresh lime juice     1 teaspoon sugar $     1/4 teaspoon salt     2 pounds unpeeled large raw shrimp $     1 red onion, cut into 1/4-inch-thick slices     2 tablespoons olive oil $     3 tablespoons Jamaican Jerk Rub Preparation     Combine first 7 ingredients in a medium bowl, and set salsa aside.     Peel shrimp, leaving tails on; devein. Toss shrimp and onion with oil in a large bowl, sprinkle with Jamaican Jerk Rub, and toss to coat. Grill shrimp and onion over medium-high heat (350° to 400°) 6 minutes, or just until shrimp turn pink, turning once. Chop onion and add to salsa mixture, stirring gently. Serve shrimp with salsa.