How to ignore project files with xcode git ?

[mikezang]

I use a general .gitignore file to avoid useless files, but I am not sure how to ignore some files relevant to project itself in iOS6, there is no such files before iOS6, does anyone help me?

[mikezang]

Here is my .gitignore file

# hidden/temp files
.DS_Store
*.swp
*~.nib
*.a
*.old
*.new
*.md
 
# Build dir
build/
 
# Subversion dir
.svn/

# Xcode project files except for the project file
*.xcodeproj/*
*.xcodeproj/*/
!*.xcodeproj/project.pbxproj
 
# Windows image thumbnail file
Thumbs.db
 
# User-specific project settings
*.mode1v3
*.mode2v3

and here is what I found files about Xcode project: