* Update documents partially.
* Finish basic adaptation of Virtools 2.5, 3.5, 4.0, 5.0 with both plugin and standalone version.
* Still have problem while building with Virtools 2.1 reverse SDK. Waiting upstream changes.
* Descending required build tools chain v142 -> v100. Actually, require Visual Studio version < Visual Studio 15(I use Visual Studio 2010).
* Add more macro for Virtools.props
* Solve build error for standalone version of Virtools 5
* Finish mk_materializer_cfg.py with all possible options
* SuperScriptMaterializer now load Virtools.props to define how the entire project should be compiled
* Move includeing path, lib path and etc to a specific file Virtools.props
* Add mk_materializer_cfg.py to change Virtools.props for more build configuration
* Ready for multi-virtools-version development
