initial draft documentation of spi api
initial draft documentation of spi api

vagrantc/libsoc,jackmitch/libsoc,yegorich/libsoc,vagrantc/libsoc,hlummis/libsoc,hlummis/libsoc,jackmitch/libsoc,janick/libsoc,yegorich/libsoc,vagrantc/libsoc,hlummis/libsoc,janick/libsoc,hlummis/libsoc,jackmitch/libsoc,janick/libsoc,yegorich/libsoc,janick/libsoc