Merge pull request #22 from XForms/master

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Merge pull request #23 from XForms/master

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Merge pull request #24 from XForms/master

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Merge pull request #25 from XForms/master

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Merge pull request #26 from XForms/master

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#172, Removed attributes from android calendar to clear up reference bug with Xamarin.  Fixed various configuration and build items.
Merge pull request #274 from Bowman74/master

#172, Removed attributes from android calendar to clear up reference bug with Xamarin.  Fixed various configuration and build items.