updating readme with incremental output documentation
updating readme with incremental output documentation

simudream/sh,jakirkham/sh,pdelong42/sh,amoffat/sh,rdhyee/sh,Stupeflix/sh,germangh/sh,hacosta/python-sh,pombredanne/sh,z-fork/sh,amoffat/sh,lwgarmstrong/sh,hacosta/python-sh,rsmith31415/sh,ppannuto/sh,achernet/sh,twocngdagz/sh