Update example for adding mime-types to not use deprecated functionality. Fixes #1737.
Update example for adding mime-types to not use deprecated functionality. Fixes #1737.

The old example gives deprecation warnings from recent 2.x versions of mime-types. As of f0bd25a the Gemfile also allows version 3.0 or newer. The new example should work regardless of the version of the mime-types gem. [skip ci]

victorngkp/paperclip,gfvcastro/paperclip,rpbaptist/paperclip,bdewater/paperclip,bdewater/paperclip,victorngkp/paperclip,gfvcastro/paperclip,rpbaptist/paperclip