modified the steps using kityminder-core in README.md
modified the steps using kityminder-core in README.md

fex-team/kityminder-core,2947721120/obtuse-parakeet,ffly1985/kityminder-core,fzxs8/kityminder-core,fzxs8/kityminder-core,fex-team/kityminder-core,2947721120/obtuse-parakeet,ffly1985/kityminder-core