## binary-addition

### Instructions

Write a function named `BinaryAddition(int,int)` that takes two integers and returns the sum of the two in binary in an array of `int`.
- If the sum is negative return `nil` value.
- convert the argument to binary then add the two binary numbers together

### Expected function 
```go
func BinaryAddition(a int, b int) []int {
    // your code here
}
```

### Usage

```go
package main

import "fmt"


func main(){
    fmt.Println(BinaryAddition(1,1))
    fmt.Println(BinaryAddition(1,2))
    fmt.Println(BinaryAddition(1,3))
    fmt.Println(BinaryAddition(4,4))
}
```

and the output should be:

```console
$ go run . 
[1 0]
[0 1 1]
[1 0 0]
[0 1 1]
[1 0 0]
[1 0 1]
```