[plugins.json] Add cocoapods-user-defined-build-types

[joncardasis]

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

{
  "gem": "cocoapods-user-defined-build-types",
  "name": "CocoaPods User Defined Build Types",
  "author": "Jonathan Cardasis",
  "url": "https://github.com/joncardasis/cocoapods-user-defined-build-types",
  "description": "A CocoaPods plugin which can selectively set build type per pod (static library, dynamic framework, etc.)"
}

[joncardasis]

@orta

[orta]

You're welcome to send a PR for it - it'd be great if you also changed "Cocoapods" to "CocoaPods" in the README too 👍

[joncardasis]

Thanks for the callout on the README. Updated and submitted PR 👍