Shrimp With Tomato and Feta (Garides Me Domata Kai Feta)

Ingredients

• 2 tablespoons olive oil
• 1 medium onion , finely chopped
• 3 garlic cloves , minced
• 1/2 teaspoon dried oregano , crumbled
• 1/4 teaspoon red pepper flakes
• 1/2 cup dry white wine
• 1 can crushed tomatoes in puree
• 1 teaspoon salt
• 1 1/2 lbs large shrimp , peeled and deveined
• 1 lb orzo pasta
• 1/2 cup kalamata olive , pitted and chopped
• fresh ground pepper
• 1 lb feta , patted dry and crumbled ( about 3 cups )