change carousel-indicators style

Created by: forghan89

Many users want to change the carousel indicators style, so please add two classes below:

• square : .carousel-indicators-square

.carousel-indicators-square{ width: 14px; height: 14px; }

• round : .carousel-indicators-round

.carousel-indicators-round{ width: 14px; height: 14px; border-radius: 100%; }