遇到的问题：
warning: in the working copy of 'build/build.js', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'build/check-versions.js', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'build/utils.js', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'build/vue-loader.conf.js', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'build/webpack.dev.conf.js', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'build/webpack.prod.conf.js', LF will be replaced by CRLF the next time Git touches it
如下面图:
