Don't try to inline paths containing interplorated LESS variables.
When creating recusrsive inliners, still use the factory.

This means if you include a LESS file from a CSS file it will get
inlined properly.
Merge pull request #7 from gauthierm/interplorated-less-paths

Don't try to inline paths containing interplorated LESS variables.
prepare for release of 0.0.17 | out of sync release