npm_and_yarn in /docs for brace-expansion, brace-expansion, js-yaml, next, next, next, next, next, next, next, next, postcss, sharp - Update #1499843980

npm_and_yarn in /docs for brace-expansion, brace-expansion, js-yaml, next, next, next, next, next, next, next, next, postcss, sharp - Update #1499843980 #50