I will keep this guide here for its usage in getting started with unity and swift as it provides more information compared to the guide mentioned. This is a different approach and also largely more maintainable due to the easily configurable unity.xcconfig (To get through most of the project config headaches). UPDATE July 11th 2016: There is also another guide, which I have since started using for my app development moving forward.
UPDATE November 15th 2017: Though I haven’t been following Unity and iOS as I have moved onto another exciting project, aladar made a comment on updating specs and how it’s done to latest unity as of this posting, so please take a look!
