##nfscan 1.2
- Access AWS resources using IAM roles instead of hardcoded accessKeys and secretKeys.
- Remove references to BasicCredentials since we're gonna use AWSCredentialsChain for that.
- Parameterize backend username and password.
- Upgrade AWS sdk to 1.11.44.
##nfscan 1.1
- Add QRCode and manual donation capabilities.
- Add unit tests targeting JDK 7 >=.
- Upgrade spring security for higher security.
- Clean up unused libraries on pom.xml.