Archive Plugin - symlinks

[marie-j]

Hello,

When using the builtin plugin-archive, symlinks are not compressed properly.
Example:

ls -l node_modules/.bin
 webpack-dev-server -> ~/node_modules/.bin/webpack-dev-server

instead of

ls -l node_modules/.bin
webpack-dev-server -> ../webpack-dev-server/bin/webpack-dev-server.js

This seems related to mholt/archiver#222

Thanks