[iOS] Add missing information regarding CocoaPods

[mosabab]

Platforms affected

iOS

Motivation and Context

[iOS] Add missing information regarding CocoaPods.

Description

Testing

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[erisu]

Maybe have the message like this?

In the latest release for Cordova-iOS 6.x, which these docs are aiming for, it has a requirement that CocaPods has to be 1.8.0 or greater.

[mosabab]

Maybe have the message like this?

In the latest release for Cordova-iOS 6.x, which these docs are aiming for, it has a requirement that CocaPods has to be 1.8.0 or greater.

You are right, but this is information of the documentation for iOS, and I think there is no need to specify the version in the main documentation like ios-deploy, because the installation code sudo gem install cocoapods will install the latest stable version which is for now 1.9.3 which is > 1.8.0

And you can always specify the minimum version requirements in the new cordova-ios releases.

Anyway, your suggest seems good to include.

[breautek]

Tests passed, thank you for your contribution @mosabab ! 🎉