intial example commit.
Merge branch 'master' into example
Added git ignore.
Added build directory with makefile.

1. updated gitignore to ignore build files.
2. created makefile to build examples.
3. moved build readme into build dir.
Added explicit_typeid exmaples.

Created basic explicit typeid examples that reflect the new tutorial.
Removed explicit_typeid ctor dtor.

Removed the constructer along with the destructor, as it would not be
required to be supported. This also removed of the static compare overload
for explicit_typeid instances.
minor spelling and name changes.
Split tutorial into seperate files.

Created seperate tutorial files for each topic, with links in the main
tutorial.