Photo upload work in progress

I'm _guessing_ you copied this from a StackOverflow post or the like, because this style of library-loading was common in Rails 2.  That is, `lib` was a "junk drawer" filled with random Ruby snippets.

In Rails 3 and 4, you _should_ be able to place `file_size_validtor.rb` in the `app/validators/` directory and have Rails automatically load it.

See http://stackoverflow.com/questions/5263239/where-should-rails-3-custom-validators-be-stored

In general, any time you're placing a file in a "miscellaneous" directory, you should ask yourself, "Is there some Rails-sanctioned place to put this?"