my fave .gitignore

.gitignore

# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so
*.pyc

# Packages #
############
# it's better to unpack these files and commit the raw source
# git has its own built in compression methods
*.7z
*.dmg
*.gz
*.iso
*.jar
*.rar
*.tar
*.zip

# Logs and databases #
######################
*.log
*.sql
*.sqlite

# OS generated files #
######################
.vagrant
.DS_Store
.DS_Store?
._*
.Spotlight-V100
.Trashes
ehthumbs.db
Thumbs.db

# Ruby related files #
######################
*.gem
*.rbc
.bundle
.config
coverage
InstalledFiles
lib/bundler/man
pkg
rdoc
spec/reports
test/tmp
test/version_tmp
tmp

# YARD artifacts #
##################
.yardoc
_yardoc
doc/

# JS/NPM related files #
########################
.*.swp
.lock-wscript
.wafpickle-*
CVS
npm-debug.log
node_modules

# Byte-compiled / optimized / DLL files #
#########################################
__pycache__/
*.py[cod]

# C extensions #
################
*.so

# Distribution / packaging #
############################
.Python
env/
build/
develop-eggs/
dist/
eggs/
lib/
lib64/
parts/
sdist/
var/
*.egg-info/
.installed.cfg
*.egg

# Installer logs #
##################
pip-log.txt
pip-delete-this-directory.txt