doc: readme improvements (cleaup, xcode debugging, etc)

[ath0mas]

Platforms affected

iOS

Motivation and Context

Reviewing Readme between cordova-ios and cordova-android.

Description

Fix typo and add "Debugging in Xcode".

(also see similar PR for cordova-android apache/cordova-android#1308)

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

[ath0mas]

I just applied the same changes suggested and merged by @erisu in linked PR for cdv-android.

Ready for review!

[breautek]

All in all, I think these are good improvements. I Just have a couple of nit picks.

[codecov-commenter]

Codecov Report

Merging #1133 (1a5a583) into master (7a4f7c3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1133   +/-   ##
=======================================
  Coverage   74.86%   74.86%           
=======================================
  Files          13       13           
  Lines        1723     1723           
=======================================
  Hits         1290     1290           
  Misses        433      433           

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[erisu]

As for @NiklasMerz comment

You can also open the PROJECTNAME.xcodeproj or ``PROJECTNAME.xcodeworkspace` files in the platforms folder.

IMO, if you want to add this to the README, only suggest opening the xcodeworkspace and not mention the option for xcodeproj.

If my memory is correct, there were issues in the past when opening xcodeproj. E.g. within XCode the CordovaLib might not have loaded and there were reference issues. But right now it seems OK...

[NiklasMerz]

@erisu I agree. I have used both with no issues so far but we should only recommend the workspace.

[erisu]

OK, I have remembered it now and confirmed,

If a user is installing a plugin that uses Pods, opening the xcodeproj will not load the Pods as it is a separate project. And then, the code that imports the pods will fail and leads to build failures.

If the project contains Pods, the users should open xcworkspace.

This is why I always suggested to people to open the xcworkspace. xcworkspace works for all cases.

If we mentioned anything about xcodeproj, it could lead to confusion.

If anything is mentioned, just the xcworkspace is fine.

Here is also an example screenshot of the XCode project navigator to show the difference.

xcworkspace	xcodeproj

[erisu]

Suggested change

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Revert