[plugins.json] Add cocoapods-update-if-you-dare

[Ashton Williams]

Please add the following entry to the plugins.json file:

{
  "gem": "cocoapods-update-if-you-dare",
  "name": "CocoaPods Update If You Dare",
  "author": "Ashton Williams",
  "url": "https://github.com/Ashton-W/cocoapods-update-if-you-dare",
  "description": "update ... if you dare (warns users before updating all pods at once)"
}

[Orta Therox]

Want to send a PR?

[Ashton Williams]

np