XibFree fix some bugs

See http://www.toptensoftware.com/xibfree/ for more information.

To install it with nuget:

        Install-Package XibFree

added the Animate feature for LinearLayout subviews.

        _contentLayout = new LinearLayout(Orientation.Vertical);
        _contentLayout.Animate = true;
        _contentLayout.AnimateDuration = 0.5f;

For now, the Wiki is null. Welcome everyone to add/update it.

We're looking forward to your contributions via pull requests on GitHub.

If you have further questions or are running into trouble, feel free to open an issue here, or contact us at tingtingan@highviewsoftware.com.