Published Javadoc is out of date.

[lizroth]

https://aws.github.io/aws-encryption-sdk-java/javadoc/com/amazonaws/encryptionsdk/AwsCrypto.html#encryptString(com.amazonaws.encryptionsdk.CryptoMaterialsManager,java.lang.String) is deprecated and has had a Javadoc update, but https://aws.github.io/aws-encryption-sdk-java/javadoc/ is still showing version 1.6.0's Javadoc.

At the least, Javadoc needs a manual update. Getting it into the release process as well would be good, but there might be more blockers to getting that done right away.

Possibly related to #90 and #91