Real Estate sample app updated for Flex beta 2

I updated the Real Estate example to make it work with the beta 2. I also made the code simpler and took out some classes from the service package. Now, I'm using plain RemoteObject.

If you are wondering why we don't post lately, we can tell you that we are very busy but doing a lot of things to improve this blog. I hope that soon we'll have a new version up and running.

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