Enhanced .gitignore file for Drupal

.gitignore

# Ignore configuration files that may contain sensitive information.
sites/*/settings*.php

# Ignore paths that contain user-generated content.
sites/*/files
sites/*/private

# Unnecessary core files.
/README.txt
/CHANGELOG.txt
/COPYRIGHT.txt
/INSTALL*.txt
/LICENSE.txt
/MAINTAINERS.txt
/UPGRADE.txt
robots.txt
web.config
xmlrpc.php
sites/all/README.txt
sites/all/modules/README.txt
sites/all/themes/README.txt
.htaccess

# Unnecessary core modules
/modules/aggregator
/modules/blog
/modules/book
/modules/dashboard
/modules/forum
/modules/openid
/modules/overlay
/modules/php
/modules/poll
/modules/profile
/modules/rdf
/modules/simpletest
/modules/statistics
/modules/toolbar
/modules/tracker
/modules/trigger

# Unnecessary core themes
/themes/garland
/themes/stark

# Unnecessary module files
tests

# Cache specific files.
cache/
.sass-cache

# Temporary folder
/tmp

# IDE specific files
.sublime-project
/nbproject
.idea

# Unnecessary metadata files
.DS_Store
Thumbs.db
desktop.ini