gh-pages need regenerating

[rlsosborne]

On reading the SPI documentation on http://github.xcore.com/sc_spi you get a box with

"MathJax no longer loads a default configuration file; you must specify such files explicitly. This page seems to use the older default config/MathJax.js file, and so needs to be updated."

This issue has been fixed in xdoc so it should just be a case of regenerating the documentation and pushing.

Also see http://www.xcore.com/forum/viewtopic.php?f=5&t=1879