Deep lodash module dependencies on Windows hit path length limit

This pull request reverts to `lodash.min` to cater for Windows users who use this great plug-in. Hope this is ok.

I appreciate this isn't an issue with `grunt-jscs` itself, but until @jdalton [approves the new release of `lodash`](https://github.com/lodash/lodash/issues/501) this will have a significant impact on development work.
I'd expect `require( "lodash" ).assign` to work.