Set up two projects - Game Engine & Game(Demo)

RebornEngine（Solution）
|
|------RebornEngine Project
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|------Game Demo Project

I will create the GUI System future after I make more features for the engine core, but now just 2 projects.  RebornEngine Project generates RebornEngine.lib， and GameDemo will use it to create a game demo.

The 2 projects will use same output directory, I set it in both Configuration Property Pages.

For the demo's project need to set the additional include directory and set the additional dependencies directory to include .h files and link .lib files from the Engine Project.

I think everyone faced the problem, sometimes the config file gets trouble, and then the project will not work well. Most time we can use version control systems such as SVN or GitHub.com to help us but when updated the development environment or going to config the project to cross-platform with CMAKethen the config will very important.