README: Add warning about urlencoding params
Add .gitignore file
Add .gitattributes file

For LF normalization
Add bower.json
Update version to 2.5.0-rc.3-dev
Don't require consumer key if bearer token is set. Fix #72
Add changelog entry for #72
Add note about #72 to readme
Finish 72-no-signing-for-app-only-auth
Simpler PHPDoc file header for codebird.js
Base64-encoded images are called `media` too (not `media_data`)
Ignore some more files
Add search_tweets usage example, see #73
Set version to 2.5.0
2.5.0 release date
Finish 2.5.0