Added Safari support
Safari Support - Notification comes from Safari.
Safari support.  Fixed comment for Chrome browser
Recatored browser to take the name so we can pass through the configured browser name.
Made the browser key optional in response to code review comments about backwards compatibility
Notifier - Generalice browser to be notification_app_name.  Added a TODO to fill out the feature.
Merge branch 'master' into safari_support

Conflicts:
	lib/glue.rb
Merge pull request #1 from nburwell/safari_support

Safari support