Added .gitignore template for Objective-C projects from Github.
Support for multiple main windows.
Added custom title background colour; fixed title and message height sizing by using ceil() to round up to next full point and eliminate fuzzy text rendering; use floor() on alert height to remove gap in content area that might appear with fractional points; added demo of custom title background colour.
Fixed bug where delegate isn't set on alert view.
Merge pull request #12 from bowerlabs/master

Multiple main window support, custom title background colour support, fixed fuzzy layout bug, added .gitignore