Added simple method to add 'pure-is-open' class to body tag when modal is open
Combined 'closeEvents' with 'on/trigger' feature to streamline events
Updates to triggers and events
- Renamed `.trigger` method to `.triggerHandler`
- Updated references to `.triggerClose` in modalflow.js to `.Close`
- Allowed developers to cancel the Close event if event handler returns false
Update README.md

- Added QuickStart Guide to README
AUTO: Compiled and prepared repository for v1.0rc3 release
AUTO: Merging release-v1.0rc3 branch for version v1.0rc3