merge dev version
start updating document
fix index.rst
fix index.rst
fix index.rst
fix index.rst
update usersguide.rst
update index.rst
update index.rst
update index.rst
update
update docs
marge dev
add doc of system module
update
Merge branch 'master' of github.com:futuregrid/teefaa
update scratch
update
update
make it a little better with using class