Add xcproj to the Project Setup section (#2045)
Add xcproj to the Project Setup section (#2045)

## Project URL
https://github.com/xcodeswift/xcproj

## Description
Add xcproj to the project setup section.
 
## Checklist
- [x] Only one project/change is in this pull request
- [x] Addition in chronological order (bottom of category)
- [x] Supports iOS 9 / tvOS 10 or later
- [x] Supports Swift 3 or later
- [x] Has a commit from less than 2 years ago
- [x] Has a **clear** README in English
Yogesh-MV/awesome-ios,arasu01/awesome-ios,vsouza/awesome-ios,Yogesh-MV/awesome-ios