Replaced the iOS-specific ilocalize make rule with a genstrings make rule that creates iOS, OS X, and shared strings files. Moved the override English .stringsdict file under darwin/resources/. Made the default OS X callout view XIB localizable. Made some hard-coded strings in the OS X SDK source localizable.
When adding new image resources, make sure that you've reduced the file size as much as possible using a tool such as: ImageOptim — https://imageoptim.com See also: https://github.com/mapbox/mapbox-gl-native/pull/2227