Setting up Git for Xcode

.gitattributes

# Better to treat them as binary files.
*.pbxproj -crlf -diff -merge
*.pbxuser -crlf -diff -merge
*.xib -crlf -diff -merge

.gitignore

# Finder's folder settings, backup, etc.
.DS_Store
*~

# The project's build folder.
build/

# Everything in the project's package, but the key files.
*.xcodeproj/*
!*.xcodeproj/project.pbxproj
!*.xcodeproj/*.pbxuser