Pretty simple addon for MCPE 0.16.0 that replaces the pig on llama. Now, instead of pigs you will get a real llama. But this is not just an animal that eats grass. You will be able to ride a llame and control it.
To ride use a leash and saddle. Use a carrot on a stick to control and look in the required direction. Then you can build a corral for the llama and to travel on it.