>npm install gsap --save-dev --verbose
npm info it worked if it ends with ok
npm verb cli [ 'C:\\Program Files\\nodejs\\node.exe',
npm verb cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
npm verb cli   'install',
npm verb cli   'gsap',
npm verb cli   '--save-dev',
npm verb cli   '--verbose' ]
npm info using npm@3.7.3
npm info using node@v5.9.1
npm verb request uri https://registry.npmjs.org/gsap
npm verb request no auth needed
npm info attempt registry request try #1 at 6:35:16 PM
npm verb request id 13d21fc8017da268
npm verb etag "2U3U0K4040JDKQV5R1GS2JJVE"
npm http request GET https://registry.npmjs.org/gsap
npm http 304 https://registry.npmjs.org/gsap
npm verb headers { date: 'Wed, 15 Jun 2016 16:35:14 GMT',
npm verb headers   via: '1.1 varnish',
npm verb headers   'cache-control': 'max-age=300',
npm verb headers   etag: '"2U3U0K4040JDKQV5R1GS2JJVE"',
npm verb headers   age: '0',
npm verb headers   connection: 'keep-alive',
npm verb headers   'x-served-by': 'cache-ams4143-AMS',
npm verb headers   'x-cache': 'HIT',
npm verb headers   'x-cache-hits': '1',
npm verb headers   'x-timer': 'S1466008514.706610,VS0,VE405',
npm verb headers   vary: 'Accept-Encoding' }
npm verb etag https://registry.npmjs.org/gsap from cache
npm verb get saving gsap to C:\Users\no\AppData\Roaming\npm-cache\registry.npmjs.org\gsap\.cache.json
npm verb correctMkdir C:\Users\no\AppData\Roaming\npm-cache correctMkdir not in flight; initializing
npm verb cache add spec gsap@^1.18.5
npm verb addNamed ">=1.18.5 <2.0.0" is a valid semver range for gsap
npm verb addNameRange registry:https://registry.npmjs.org/gsap not in flight; fetching
npm verb get https://registry.npmjs.org/gsap not expired, no request
npm verb addNamed "1.18.5" is a plain semver version for gsap
npm verb afterAdd C:\Users\no\AppData\Roaming\npm-cache\gsap\1.18.5\package\package.json not in flight; writing
npm verb correctMkdir C:\Users\no\AppData\Roaming\npm-cache correctMkdir not in flight; initializing
npm verb afterAdd C:\Users\no\AppData\Roaming\npm-cache\gsap\1.18.5\package\package.json written
npm verb request uri https://registry.npmjs.org/fsevents
npm verb request no auth needed
npm info attempt registry request try #1 at 6:35:18 PM
npm verb etag "6WG2IHJ3R1KBCEVEQH5157IQJ"
npm http request GET https://registry.npmjs.org/fsevents
npm http 304 https://registry.npmjs.org/fsevents
npm verb headers { date: 'Wed, 15 Jun 2016 16:35:16 GMT',
npm verb headers   via: '1.1 varnish',
npm verb headers   'cache-control': 'max-age=300',
npm verb headers   etag: '"6WG2IHJ3R1KBCEVEQH5157IQJ"',
npm verb headers   age: '287',
npm verb headers   connection: 'keep-alive',
npm verb headers   'x-served-by': 'cache-ams4143-AMS',
npm verb headers   'x-cache': 'HIT',
npm verb headers   'x-cache-hits': '15',
npm verb headers   'x-timer': 'S1466008516.701190,VS0,VE0',
npm verb headers   vary: 'Accept-Encoding' }
npm verb etag https://registry.npmjs.org/fsevents from cache
npm verb get saving fsevents to C:\Users\no\AppData\Roaming\npm-cache\registry.npmjs.org\fsevents\.cache.json
npm verb correctMkdir C:\Users\no\AppData\Roaming\npm-cache correctMkdir not in flight; initializing
npm verb correctMkdir C:\Users\no\AppData\Roaming\npm-cache\_locks correctMkdir not in flight; initializing
npm verb lock using C:\Users\no\AppData\Roaming\npm-cache\_locks\staging-1fe9e527f2d65666.lock for C:\dir\node_modules\.staging
npm verb unlock done using C:\Users\no\AppData\Roaming\npm-cache\_locks\staging-1fe9e527f2d65666.lock for C:\dir\node_modules\.staging
npm verb saving [ { name: 'gsap', spec: '^1.18.5', save: 'devDependencies' } ]
npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.0.12
npm verb exit [ 0, true ]
npm info ok