Chapter 2 samples and shared items.
Added Cpp folder.
Moved everything into Cpp folder.
Added chapter 7 examples for Drop 2.
Added samples for Chapters 3, 4 and 6 and Appendix B.
Drop 4 samples. Added chapter 5 futures samples.
Added missing file for ImageBlender.
Fixed ParallelSortWithSQL sample.
Updates for Drop 3 plus some bug fixes and additional exception handling code in ImagePipeline.
Minor updates to solution, code headers etc.
Updated README, Appendix A, Chapter 2 Basic, Chapter 5 A-Dash, Chater 7 ImagePipeline.
Updates and fixes to samples for chapters 4-6.
Removed dead code.
Synced code with book text. Rewrote Social Network example. Const correctness with A-Dash.
Added file missing from previous changeset.
Fixed UI latency in ImagePipeline. Synced code with book text. Added VS Express solution.
Synced code with text and added additional samples.
Updated Appendix B samples.
Checked in by server upgrade
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