New release: card.io 5.0.0 for Android

[Jeff Brateman]

Hello from card.io!

We have posted version 5.0.0 of card.io for Android to GitHub (https://github.com/card-io/card.io-Android-SDK). 

From the release notes:

5.0.0
-----
* Add automatic expiry-scanning.
You can disable this feature via the new `EXTRA_SCAN_EXPIRY` extra of `CardIOActivity`.
Note: Expiry scans will not infrequently fail to obtain the correct expiry date.
We are continuing to work to improve expiry-scanning accuracy.
* Fix crash when the `DataEntryActivity` is missing extras [#19](https://github.com/card-io/card.io-Android-SDK/issues/19)).

Thanks!
@cardio