title: Sinon not installing while doing npm install
body: <p>I am doing </p>
  
  <blockquote>
    <p>npm install Sinon</p>
  </blockquote>
  
  <p>the error that I am getting is </p>
  
  <p><code>32 verbose stack Error: 404 Not Found: @sinonjs/formatio@^2.0.0
  32 verbose stack     at fetch.then.res (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\pacote\lib\fetchers\registry\fetch.js:42:19)
  32 verbose stack     at tryCatcher (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\util.js:16:23)
  32 verbose stack     at Promise._settlePromiseFromHandler (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:512:31)
  32 verbose stack     at Promise._settlePromise (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:569:18)
  32 verbose stack     at Promise._settlePromise0 (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:614:10)
  32 verbose stack     at Promise._settlePromises (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:693:18)
  32 verbose stack     at Async._drainQueue (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\async.js:133:16)
  32 verbose stack     at Async._drainQueues (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\async.js:143:10)
  32 verbose stack     at Immediate.Async.drainQueues (C:\Users\gvqc48\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\async.js:17:14)
  32 verbose stack     at runCallback (timers.js:789:20)
  32 verbose stack     at tryOnImmediate (timers.js:751:5)
  32 verbose stack     at processImmediate [as _immediateCallback] (timers.js:722:5)
  34 verbose Windows_NT 10.0.15063
  35 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\gvqc48\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "install" "sinon" "--save-dev"
  36 verbose node v8.9.4
  37 verbose npm  v5.7.1
  38 error code E404
  39 error 404 Not Found: @sinonjs/formatio@^2.0.0
  40 verbose exit [ 1, true ]</code></p>
  
  <p>I am running </p>
  
  <blockquote>
    <p>Node 8.9.4</p>
    
    <p>Npm 5.7.1</p>
  </blockquote>