md-datepicker does not update model when using ng-model-options updateOn: 'blur'

[jman48]

Actual Behavior:

• What is the issue? *
  When using { updatedOn: 'blur' } with ng-model-options on the md-datepicker directive, the model never gets updated.
• What is the expected behavior?
  Should update the model on blur.

CodePen (or steps to reproduce the issue): *

• CodePen Demo which shows your issue:
  http://codepen.io/anon/pen/vXNbwK?editors=1111
• Details:
  You can see that when you select a new date from the calendar drop down, the model does not get updated

Angular Versions: *

• Angular Version:
  1.5.5
• Angular Material Version:
  1.1.1

Additional Information:

• Browser Type: *
  Checked on Chrome, Firefox and IE11
• Browser Version: *
• OS: *
  Windows
• Stack Traces:
  No errors

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