added joshua-decoder script, renamed README, added user documentation
added joshua-decoder script, renamed README, added user documentation

lukeorland/joshua,thammegowda/incubator-joshua,kpu/joshua,fhieber/incubator-joshua,lukeorland/joshua,lukeorland/joshua,thammegowda/incubator-joshua,gwenniger/joshua,fhieber/incubator-joshua,thammegowda/incubator-joshua,kpu/joshua,lukeorland/joshua,gwenniger/joshua,fhieber/incubator-joshua,fhieber/incubator-joshua,gwenniger/joshua,fhieber/incubator-joshua,thammegowda/incubator-joshua,gwenniger/joshua,thammegowda/incubator-joshua,kpu/joshua,lukeorland/joshua,fhieber/incubator-joshua,thammegowda/incubator-joshua,thammegowda/incubator-joshua,fhieber/incubator-joshua,lukeorland/joshua,gwenniger/joshua,fhieber/incubator-joshua,lukeorland/joshua,thammegowda/incubator-joshua,thammegowda/incubator-joshua,lukeorland/joshua,kpu/joshua,thammegowda/incubator-joshua,gwenniger/joshua,lukeorland/joshua,fhieber/incubator-joshua,kpu/joshua,kpu/joshua