Merge pull request #1 from dkarzon/master

Added nuspec and updated example with image.
Add options for events in lib.
Return the toast notification object to the user.
Update README.md with examples of toast events.
Fix the failure event with the correct event name.
Merge pull request #2 from Aevin1387/Toast-Events

Toast events
Added support for scheduled toast notications.

Created schedule and cancel methods to allow user to schedule background
toast notifications. Factored out toast XML creation to allow reuse.
Added background notification to docs.
Reverted deletion of event setup code
Merge pull request #3 from joshearl/master

Added support for scheduling and canceling background notifications
Update to allow YeahToast.show("TOAST!");