Updates to support Cocoapods for RN 0.62

[robertmurray]

Added License file and podspec to support CocaPods for RN 0.62. Updated package.json.

[zanechua]

Do you not need to bump the s.platform to iOS 10.0 and above? The latest zendesk pods require you to use iOS 10.0 and above.

[fbartho]

Nice catch @zanechua — do you see any other details we should fix? Before this, we weren’t using cocoapods in our main projects.

[zanechua]

Yes. There are actually a few changes that I've made to my own fork of this repo. Was just speaking to the authors that were listed inside the package.json about the changes to allow Podspecs via email.

In this PR I see that the docs were updated to require you to include the RNZendeskChat Pod and to import the header files directly into our projects but that shouldn't be necessary because of updates to RN0.6x and above.

I've made the changes in my repo and referenced them below. In my own react-native app, we do not have to add any code at all into the Podfile. We just add the react-native-zendesk-chat package and we're good to go for iOS.

zanechua/react-native-zendesk-chat@117e224

EDIT: I've opened 2 PRs from a newly forked repo as that makes it cleaner.

The current version that is working with RN0.6x and auto-linking is at https://github.com/zanechua/react-native-zendesk-chat

[zanechua]

@robertmurray any reason why we're not using auto-linking and still requiring the manual import of the zendesk header files?