My .gitignore file for iOS, Android and Ruby on Rails development on OSX

.gitignore

# OSX Noise
.DS_Store

# TextMate
*.tmproj
tmtags

# XCode (and ancestors) per-user config (very noisy, and not relevant)
*.mode1
*.mode1v3
*.mode2v3
*.perspective
*.perspectivev3
*.pbxuser

# build products
build/
*.[oa]

# Other source repository archive directories (protects when importing)
.hg
.svn

# Vim
*.swp

# Thinking Sphinx
config/*.sphinx.conf
db/sphinx

# Rails 3
.bundle
db/*.sqlite3
log/*.log
tmp/**/*
public/system/*

# RubyMine
.idea/workspace.xml
.idea/tasks.xml

# Google Android
.metadata
tmp/**
*.tmp
*.bak
tmp/**/*
*.swp
*~.nib
*~
*.apk
bin
gen
local.properties
*.jar