Add a README for the release.  Ideally we would move this up a level (to the top-level release dir) before shipping it.
Add a README for the release.  Ideally we would move this up a level (to the
top-level release dir) before shipping it.

--HG--
extra : convert_revision : 3013379ec6dc95217f35aeef9df2e4ac0a33b69f

HwisooSo/gemV-update,qizenguf/MLC-STT,gem5/gem5,HwisooSo/gemV-update,austinharris/gem5-riscv,gem5/gem5,HwisooSo/gemV-update,rjschof/gem5,HwisooSo/gemV-update,gedare/gem5,rjschof/gem5,TUD-OS/gem5-dtu,samueldotj/TeeRISC-Simulator,austinharris/gem5-riscv,KuroeKurose/gem5,joerocklin/gem5,aclifton/cpeg853-gem5,zlfben/gem5,cancro7/gem5,kaiyuanl/gem5,gem5/gem5,HwisooSo/gemV-update,cancro7/gem5,qizenguf/MLC-STT,sobercoder/gem5,rallylee/gem5,joerocklin/gem5,sobercoder/gem5,SanchayanMaity/gem5,rallylee/gem5,powerjg/gem5-ci-test,joerocklin/gem5,yb-kim/gemV,austinharris/gem5-riscv,powerjg/gem5-ci-test,SanchayanMaity/gem5,briancoutinho0905/2dsampling,aclifton/cpeg853-gem5,joerocklin/gem5,SanchayanMaity/gem5,rjschof/gem5,yb-kim/gemV,powerjg/gem5-ci-test,rallylee/gem5,gedare/gem5,yb-kim/gemV,SanchayanMaity/gem5,cancro7/gem5,austinharris/gem5-riscv,zlfben/gem5,aclifton/cpeg853-gem5,cancro7/gem5,powerjg/gem5-ci-test,KuroeKurose/gem5,sobercoder/gem5,gedare/gem5,austinharris/gem5-riscv,briancoutinho0905/2dsampling,yb-kim/gemV,aclifton/cpeg853-gem5,KuroeKurose/gem5,KuroeKurose/gem5,qizenguf/MLC-STT,joerocklin/gem5,aclifton/cpeg853-gem5,gedare/gem5,KuroeKurose/gem5,gedare/gem5,qizenguf/MLC-STT,kaiyuanl/gem5,samueldotj/TeeRISC-Simulator,Weil0ng/gem5,Weil0ng/gem5,Weil0ng/gem5,SanchayanMaity/gem5,kaiyuanl/gem5,Weil0ng/gem5,markoshorro/gem5,samueldotj/TeeRISC-Simulator,samueldotj/TeeRISC-Simulator,TUD-OS/gem5-dtu,rallylee/gem5,gem5/gem5,rallylee/gem5,HwisooSo/gemV-update,KuroeKurose/gem5,briancoutinho0905/2dsampling,samueldotj/TeeRISC-Simulator,gem5/gem5,zlfben/gem5,zlfben/gem5,austinharris/gem5-riscv,gem5/gem5,kaiyuanl/gem5,qizenguf/MLC-STT,joerocklin/gem5,Weil0ng/gem5,yb-kim/gemV,qizenguf/MLC-STT,sobercoder/gem5,gem5/gem5,rallylee/gem5,TUD-OS/gem5-dtu,Weil0ng/gem5,markoshorro/gem5,cancro7/gem5,austinharris/gem5-riscv,gedare/gem5,powerjg/gem5-ci-test,qizenguf/MLC-STT,zlfben/gem5,gedare/gem5,sobercoder/gem5,SanchayanMaity/gem5,sobercoder/gem5,kaiyuanl/gem5,rjschof/gem5,briancoutinho0905/2dsampling,yb-kim/gemV,yb-kim/gemV,TUD-OS/gem5-dtu,samueldotj/TeeRISC-Simulator,aclifton/cpeg853-gem5,zlfben/gem5,briancoutinho0905/2dsampling,markoshorro/gem5,kaiyuanl/gem5,rjschof/gem5,briancoutinho0905/2dsampling,kaiyuanl/gem5,rjschof/gem5,aclifton/cpeg853-gem5,KuroeKurose/gem5,cancro7/gem5,briancoutinho0905/2dsampling,TUD-OS/gem5-dtu,markoshorro/gem5,TUD-OS/gem5-dtu,cancro7/gem5,yb-kim/gemV,HwisooSo/gemV-update,rallylee/gem5,sobercoder/gem5,zlfben/gem5,Weil0ng/gem5,markoshorro/gem5,samueldotj/TeeRISC-Simulator,SanchayanMaity/gem5,powerjg/gem5-ci-test,TUD-OS/gem5-dtu,powerjg/gem5-ci-test,joerocklin/gem5,markoshorro/gem5,rjschof/gem5,joerocklin/gem5,markoshorro/gem5