Add tests for card.validateCard()
Add StripeTest
Merge pull request #2 from stripe/stripe-test

Add tests for Stripe.java
Use DialogFragment
Require Android API 7 (Version 2.1)
Add more tests for Card
Use FrozenClock to test card.validateExpiryDate() deterministically
Add TextUtilsTest
Always update card type for all card constructors

This will fix Amex number validation when using card constructors with address/zip.
Fix address field names in hashMapFromCard
added LICENSE
Added support for Discover cards validation

Added a length-based validation for Discover cards.
Moved literals to constant fields for clarity.
Updated .gitignore with IntelliJ files.
Fix for null zip code
Update .gitignore for Android Studio, gradle
Embed the default publishable key to mirror iOS and also have the project build by default.
Add gradle build files
Use the latest build tools (19.0.3).
Fix test directory.
Slightly nicer wording here.
Add .log files to gitignore