Added Windows 8 Store app support

* Added a new project targeted to Windows 8 Store app. I changed the
folder names to separate the two. I also added to subfolders to the top
bin folder to separate the two SDKs. *
* I changed the generate_dll.bat under the Source folder to move the
correct DLLs to the correct folder.
* I re-wrote the Getting Started Guide to add a separate section on
WIndows 8 Store apps.
* Edited CHANGELOG.md in the top folder
* Edited the README.md files in the top folder and the Source folder.