This PR makes it possible to customize the output path and name of the manifest file. It allow fixes a bug where the build would fail if /assets/ directory did not exist in the destination.
Added manifestDest option which can be specified in Brocfile
manifestDest option takes a function
manifestDest function is bound to the instance of the Fingerprint Filter
manifestDest receive 2 arguments: destDir and hash of the content
manifest file is written to the file system with fs.extra.outputFile which automatically creates parent directories if they don't exist
This PR makes it possible to customize the output path and name of the manifest file. It allow fixes a bug where the build would fail if /assets/ directory did not exist in the destination.