[Papervision3D] Added a FlexFocus example to the repository

[Ralph Hauwert]

Hi List!

After seeing more and more people ask on the what and how in terms on
how to get PV3D to work in Flex, I converted Carlos's example to a
Flex example and added it to the repo.
It will show a very simple and crude example of how to incorporate
PV3D in your Flex App, aswell as point the way on how to compile an AS
only version of the Focus with the Flex Compiler.

It's in the repo : examples/FlexFocus

-- 
Ralph Hauwert
PaperVision3D