froad-gulp-usemin

This is a custom gulp-usemin. Other people please don't use it. Please go to gulp-usemin for more details.

What's the differences from gulp-usemin 0.3.11?

1. In /lib/htmlBuilder.js, We thought the basename of html as the output path is not so reasonable for us, as our html exist in different level of folders. So we change it to relativePath.
2. We use {{ and }} as the seperator for js/css/png, so we change the the startReg regexp in /lib/blocksBuilder.js according to our requirement.