Added a passed value option to closeThisDialog()
Added support for the close value to the openModal() function as well. The value used for the closeThisDialog(value) call is used as the reject reason of the promised returned by openModal().
Added default values for the two automatic methods of closing the dialog (pressing escape and clicking the document)
Merge branch 'closedialog-value'

Conflicts:
	example/index.html
	js/ngDialog.js
	js/ngDialog.min.js