MORRIS COUNTY — On arrival at Rajni for the first time, you might think you had just entered a storefront, local eatery somewhere off the streets of Mumbai on your way to pick up an order of Chicken Biriyani. Rajni could certainly be described as a low-key, modest, unpretentious eatery where one would stop in for a casual, relaxing lunch or dinner, either alone, with family, or a group of friends. Nothing fancy, formal, or elegant here, just some genuine, delicious, homemade southern Indian cuisine. The kind of food craved by many discerning diners looking for that familiar taste from their ho…