Close button in Popover title

[littlefyr]

It would be a good idea if you added another option that would add the close icon to the title. I find it odd to see it in the body of the popover... if you're going to use one.

[ArthurClemens]

I've added this to my less file to "fix" it:

.ko-popover {
    button.close {
        position: absolute;
        top: 15px;
        right: 20px;

        &:active,
        &:focus {
            outline: none;
        }
    }
}