Add `range-parser` dependency.

services/filestore/package.json

@@ -23,6 +23,7 @@
     "node-transloadit": "0.0.4",
     "node-uuid": "~1.4.1",
     "pngcrush": "0.0.3",
+    "range-parser": "^1.0.2",
     "recluster": "^0.3.7",
     "request": "2.14.0",
     "response": "0.14.0",