Flag images automatically included in asset compilation

[johnnyshields]

It seems this gem includes every flag in the world into my assets, which goes through the compilation process. This is an annoyance and adds about ~15 seconds to the compilation process. Is there a way to do one of the following:

• Generate a single sprite file for the flags
• Selectively include only the flag from I18n.available_locales into the compilation process
• Exclude all the flags from the compilation, and include the ones I want by hand

[glebtv]

15 seconds seems like a lot
it should just copy the files without any processing
rails doesn't provide a way to selectively add images to precompile, so images should be moved out of default path, and it would need an initializer copying the images

Something like this: tsechingho/ckeditor-rails#21

[glebtv]

I would welcome a pull request with this feature ;)