Can't search array fields

[vanboom]

I have an array field that stores an array of tags. I would like to search the tags along with my other fulltext fields.

When I do

   fulltext_search_in :tags

I get
NoMethodError: undefined methodencoding' for ["ghost", "accounting"]:Array`
...when trying to update the fulltext indexes.

Thanks for a great gem! I will contribute if I can figure out how to fix this.

[dblock]

Shouldn't be too hard to implement, looking forward to your PR @vanboom! 👍