added permission for ng-file-upload parameters

app/controllers/v1/learning_objects/chunks_controller.rb

@@ -30,7 +30,17 @@ class V1::LearningObjects::ChunksController < ApplicationController
 
   # Never trust parameters from the scary internet, only allow the white list through.
   def chunks_params
-    params.permit(:id, :file, :_chunkNumber, :_totalChunks, :_chunkFilename, :_chunkIdentifier)
+    params.permit(
+			:id,
+			:file,
+			:_chunkNumber,
+			:_totalChunks,
+			:_chunkFilename,
+			:_chunkIdentifier,
+			:_chunkSize,
+			:_currentChunkSize,
+			:_totalSize
+		)
   end
 
   def post_file!