Implement a function that adds two numbers together and returns their sum in binary. The conversion can be done before, or after the addition.
The binary number returned should be a string.
def add_binary(a,b):
    total = a + b
    total = (bin(total)[2:])
    return total
def add_binary(a,b):
    total = a + b
    total = (bin(total)[2:])
    return total