I can't add any .fnt/.png type of fonts to SpriteBuilder, so I can't select them for a CCLabelBMFont. What is the procedure? The docs seem to have nothing on the matter.

I am using this font:

<https://github.com/cocos2d/cocos2d-iphone/blob/v3.1/Resources/Fonts/arial16.fnt>
<https://github.com/cocos2d/cocos2d-iphone/blob/v3.1/Resources/Fonts/arial16.png>

Update: seems to be no real good solution at this point, except workarounds like:

* Don't use SpriteBuilder when dealing with CCLabelBMFont, after all you CAN use the arial16 font if you do it from code. It's a shame SB doesn't support a font that is "bundled" with existing Cocos2D. Of course there are probably good reasons...
* In my case I just use a CCLayoutBox and add fixed-sized character sprites to it, not using any font classes at all. It's actually really fast and enough to make a countdown timer etc.