Merge branch 'master' of https://github.com/wonday/react-native-pdf.git

Merge pull request wonday#509 from mrbrentkelly/master

fix: Xcode 12 compatibility

version up to v6.2.0

version up to v6.1.2

version up to v6.1.1

version up to v6.1.0

fix readme

version up to v5.1.7

version up to v5.1.6

version up to v5.1.5