Update second script to copy device config

I updated the second script to copy the CURRENTCONFIG_DEVICE_DIR to the CURRENTCONFIG_UNIVERSAL_DIR instead of creating it to include other files that might have been copied via Copy Files build phases (e.g. readme files, xibs, etc); this removes the need to copy just the header folder.
Fix nested copy bug

I moved too fast (it's late!) and there was a case where the CURRENTCONFIG_DEVICE_DIR was getting copied under the CURRENTCONFIG_UNIVERSAL_DIR instead of replacing it.
Merge pull request #2 from erator/patch-1

Update second script to copy device config