Release 3.10.1
Fixed deprecated call to presentModalViewController

As the minimum iOS version you support is 6.1, then this method should be changed to `presentViewController: animated: completion:`.
Fixed another deprecated call.

`dismissModalViewController` changed to `dismissViewControllerAnimated: completion:`
Merge pull request #82 from Zhukn1/patch-2

Fixed deprecated call to presentModalViewController
README.md: add CocoaPods info
Release 4.0.0
README.md: note the open-source repo
add Swift sample app
Merge pull request #1 from card-io/master

update