I run my blog on nginx and use your plugin as provided functionality by WP Super Cache plugin. I have defined CDN and it works for the most part, but what I'm noticing is that javascropts from plugins located in wp-content/* and theme files are not using CDN:
I attempted to define the direct directory to my theme files under options: wp-content/themes/Curious in addition to main directories - but it didn't help.
Any feedback or assistance would be greatly appreciated. I'm using CDN with origin pull: MaxCDN and it worked well previously with W3-TotalCache plugin before.