Add consistent (by filename/path) sort on hashes
Add consistent (by filename/path) sort on hashes

To avoid randomization in version control, it's best to have a
consistent order of results in the assethash JSON object between runs,
even if the source files don't change.

This commit adds a step to the file output process to re-order the JSON
object based on sorting the keys.

ktmud/grunt-hashmap