Add option to skip check for updates

[SimenB]

del gives us an EPERM on our CI, would like to skip this check which makes the error go away

error   31-Mar-2016 14:15:50    Error: EPERM: operation not permitted, rename 'C:\Windows\system32\config\systemprofile\.config\configstore\update-notifier-del-cli.json.1874881583' -> 'C:\Windows\system32\config\systemprofile\.config\configstore\update-notifier-del-cli.json'
error   31-Mar-2016 14:15:50        at Error (native)
error   31-Mar-2016 14:15:50        at Object.fs.renameSync (fs.js:681:18)
error   31-Mar-2016 14:15:50        at Function.writeFileSync [as sync] (D:\Bamboo\bamboo-home\xml-data\build-dir\SON-FRON-JOB1\code\node_modules\write-file-atomic\index.js:39:8)
error   31-Mar-2016 14:15:50        at Object.create.all.set (D:\Bamboo\bamboo-home\xml-data\build-dir\SON-FRON-JOB1\code\node_modules\configstore\index.js:63:21)
error   31-Mar-2016 14:15:50        at Object.Configstore (D:\Bamboo\bamboo-home\xml-data\build-dir\SON-FRON-JOB1\code\node_modules\configstore\index.js:28:11)
error   31-Mar-2016 14:15:50        at new UpdateNotifier (D:\Bamboo\bamboo-home\xml-data\build-dir\SON-FRON-JOB1\code\node_modules\update-notifier\index.js:34:17)
error   31-Mar-2016 14:15:50        at module.exports (D:\Bamboo\bamboo-home\xml-data\build-dir\SON-FRON-JOB1\code\node_modules\update-notifier\index.js:108:23)
error   31-Mar-2016 14:15:50        at Object.<anonymous> (D:\Bamboo\bamboo-home\xml-data\build-dir\SON-FRON-JOB1\code\node_modules\del-cli\cli.js:30:1)
error   31-Mar-2016 14:15:50        at Module._compile (module.js:435:26)
error   31-Mar-2016 14:15:50        at Object.Module._extensions..js (module.js:442:10)

[SimenB]

Found out about --no-update-notifier which update-notifier checks after, so I suppose this can be closed

[sindresorhus]

Can you open an issue on https://github.com/yeoman/update-notifier? It should be more graceful handling that and ideally the issue should be fixed. I've seen people report it before on some other modules.