C++ pile template

This is a simple template to use when generating new piles for a C++ class.

tempile, TemPile and TEMPILE are place-holders both in the name of the files and directories and in also in the content of files.

Templates

The process of creating a pile from a template goes like this:

- the template directory must contain a *pile* directory
and a *pile-helpers* directory (literally the world **pile**, this
is not a place-holder);
- a directory is created for the pile and one for the helpers;
- everything is copied recursively, with 
*tempile*, *TemPile*, *TEM_PILE* and *TEMPILE* replaced with 
pile's name in similar case both in names and in content;
- a repository is initialized in each of the two directories 
(pile and helpers); a commit is created and, well..., committed;
- the pile is added as a sub-module inside the helpers directory