fix(loading-indicator.ios): allow message to line break in iOS

[jasonfrasch]

PR Checklist

• The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/CONTRIBUTING.md#commit-messages.
• There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it. Long messages do not line break in iOS #42
• All existing tests are passing
• Tests for the changes are included

What is the current behavior?

Long messages do not line break in iOS

What is the new behavior?

Long messages will break to the next line in iOS

Fixes #42

[jasonfrasch]

Not sure what to do for testing coverage, do you have suggestions?

[bradmartin]

For now, no worry on the tests. We just have a simple app build in place, sadly, no time for test coverage for all the plugins/APIs we have. Would love to get to it, but not a priority at the moment.

Thanks for the PR by the way, I'll try to bump this out shortly as a bug release

[jasonfrasch]

You're welcome, glad I could help (even if it's just a little)