Mediterranean Grilled Shrimp Skewers




1 pound peeled and devained shrimp with tails removed
1 cup small tomatoes
1 green bell pepper, chopped
½ red onion, chopped
1 cup black California olives
⅛ cup packed basil leaves, sliced
¼ cup extra-virgin olive oil
2 teaspoons lemon juice
2 teaspoons course grain Dijon mustard
1 teaspoon garlic
¼ teaspoon salt
¼ teaspoon pepper