/**
@mainpage

[mcp23s17.h](mcp23s17_8h.html)

@section links Links

- [piface.org.uk](http://www.piface.org.uk)
- [piface product source code](http://piface.github.io)
- [Source code on GitHub](https://github.com/piface/libmcp23s17)

@section use Using the library

Download:

    $ git clone https://github.com/piface/libmcp23s17.git

Build the library:

    $ cd libmcp23s17/
    $ make

This creates the library `libmcp23s17.a`. Build the example (using PiFace Digital):

    $ make example

Include the library in your project with:

    $ gcc -o example example.c -Isrc/ -L. -lmcp23s17

`-I` directories to search for header files.
`-L` directories to search for libraries.
`-l` libraries to link.

@section todo Todo

Feel free to contribute!

- Debian install

*/