How do I put an image inside text?

I have an image with color. How can I place this in-line like the $ symbol in uGUI? I want to use it to represent a currency.

http://forum.unity3d.com/threads/make-ttf-from-png-images.263696/#post-1743998
You can do it with custom font.

You can do it with custom font
http://forum.unity3d.com/threads/make-ttf-from-png-images.263696/#post-1743998