Reorganize files into folders

[head5man]

Use some acceptable structure e.g.

https://stackoverflow.com/a/16152003

PROJECT_NAME (from repository clone)
|-- build // This is DVCS ignored but has all the built intermediates and final binaries
|   |-- release // These are the different build profiles
|   |-- debug
|   |-- profile
|   `-- coverage
|-- bin // For binary source code
|   `-- hello_world
|       |-- doc
|       |-- inc
|       |-- src
|       |-- tests
|       `-- build_script  // Builds binary into the build folder
|-- include // Public headers for the library
|   `-- these
|       `-- folders
|           `-- represent
|               `-- namespaces
|                   `-- my_awesome_class.hpp
|-- lib // library source code
|   |-- these
|   |   `-- folders
|   |       `-- represent
|   |           `-- namespaces
|   |               |-- inc // Private headers
|   |               |   `-- my_private_class.hpp // internal class
|   |               |-- src // Source code for this namespace
|   |               |   |-- posix
|   |               |   |   `-- my_awesome_class.cpp // posix specific source code
|   |               |   |-- nt
|   |               |   |   `-- my_awesome_class.cpp // nt specific source code
|   |               |   |-- my_private_class.cpp // non-visibile class
|   |               |   `-- my_awesome_class.cpp // cross platform source code
|   |               |-- tests // Unit tests
|   |               |   `-- my_awesome_class.cpp // builds a test executable for the library
|   |               `-- doc // Documentation for this namespace
|   |                   `-- namespace.dox
|   `-- build_script  // Builds binary into the build folder
|-- doc // Documentation files
|   |-- main_page.dox
|   `-- namespace.dox
`-- build_script  // Builds the source code into the build folder