Added section to using.rst
Added section to using.rst

qwhelan/asv,mdboom/asv,mdboom/asv,spacetelescope/asv,cpcloud/asv,giltis/asv,edisongustavo/asv,ericdill/asv,airspeed-velocity/asv,airspeed-velocity/asv,pv/asv,ericdill/asv,qwhelan/asv,ericdill/asv,mdboom/asv,pv/asv,edisongustavo/asv,spacetelescope/asv,qwhelan/asv,cpcloud/asv,qwhelan/asv,pv/asv,pv/asv,mdboom/asv,airspeed-velocity/asv,waylonflinn/asv,spacetelescope/asv,spacetelescope/asv,ericdill/asv,airspeed-velocity/asv,edisongustavo/asv,giltis/asv,waylonflinn/asv,waylonflinn/asv,cpcloud/asv,giltis/asv