v0.1.7 / additional input hidden fields are not being parsed

[marekyggdrasil]

There has been an attempt to fix this but this change is not included in recent version anymore. ( I am using 0.1.7, this was supposed to be merged from 0.1.5 but hidden field values are not being parsed ).

#31

I manually changed this line in 0.1.7 and it does the trick.

https://github.com/aguidrevitch/jquery-file-upload-middleware/pull/31/files#diff-a84ee0d243cb843eb7bb4793154ca75fR65

Can this be merged to new version?