Can not build sample code

[crane-hiromu]

@emorydunn

Some code is not included on version 0.5.1
Could you release a new version that include some code (LayoutXXX ) ?

Thanks for your support : )

[emorydunn]

I'll take a look this weekend and make sure things are buttoned up enough for a release. If you have any feedback about the LayoutBuilder let me know, thanks!