Change PSPDFKit lib version to 2.1.0
Fix warning in project file.
Add properties to enable and configure share with UIActivityViewController.
Add property to limit max file size for sharing option.
Move file size check logic to PTShowcaseView. Fixed an issue with nested file index.
Merge branch 'master' of github.com:AL333Z/PTShowcaseViewController into sharing
Merge pull request #3 from AL333Z/sharing

Sharing