C++ Improvements

- Added a section on references
- Cleaned up and rephrased comments
- Removed old and erroneous information
- Normalized indentation to four spaces
- Normalized style to "Stroustrup style"  (http://www.stroustrup.com/bs_faq2.html#layout-style)

In the near future I plan on additional sections covering idiomatic use, such as RAII and C++11 paradigms.
Could you say what this statement outputs please? I do not quite understand what a namespace does and I feel seeing the output of this would help a bit.