While pasta cooks, heat olive oil in a dutch oven over medium-high heat. Saute onion for 3-5 minutes, until tender. Add garlic, and sauté 1-2 minutes more. Add kale to skillet, and pour lemon juice and wine over the greens. Season with salt and a few dashes of hot sauce to taste. Stir, cover, and reduce heat to medium. Cook 5 minutes, stirring occasionally.