Got error while installing

$ sudo npm install -g aglio
npm WARN deprecated coffee-script@1.12.7: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
npm WARN deprecated jade@1.11.0: Jade has been renamed to pug, please install the latest version of pug instead of jade
npm WARN deprecated transformers@2.1.0: Deprecated, use jstransformer
npm WARN deprecated constantinople@3.0.2: Please update to at least constantinople 3.1.1
npm WARN deprecated minimatch@0.3.0: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
/usr/local/bin/aglio -> /usr/local/lib/node_modules/aglio/bin/aglio.js

> protagonist@1.6.8 install /usr/local/lib/node_modules/aglio/node_modules/protagonist
> node-gyp rebuild

gyp ERR! configure error
gyp ERR! stack Error: EACCES: permission denied, mkdir '/usr/local/lib/node_modules/aglio/node_modules/protagonist/build'
gyp ERR! System Darwin 16.0.0
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /usr/local/lib/node_modules/aglio/node_modules/protagonist
gyp ERR! node -v v8.9.4
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: protagonist@1.6.8 (node_modules/aglio/node_modules/protagonist):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: protagonist@1.6.8 install: `node-gyp rebuild`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1

+ aglio@2.3.0
updated 1 package in 249.566s