chore: update README.md

Author: imabhichow

README.md

@@ -105,6 +105,10 @@ You don't need an Amazon Web Services (AWS) account to use the AWS Encryption SD
 
 * **To create a key in AWS KMS**, see [Creating Keys](https://docs.aws.amazon.com/kms/latest/developerguide/create-keys.html).
 
+* **To download and install the AWS SDK for Java 2.x**, see [Installing the AWS SDK for Java 2.x](https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/getting-started.html).
+
+* **To download and install the AWS SDK for Java 1.x**, see [Installing the AWS SDK for Java 1.x](https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/getting-started.html).
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 #### Amazon Corretto Crypto Provider
 Many users find that the Amazon Corretto Crypto Provider (ACCP) significantly improves the performance of the AWS Encryption SDK.
 For help installing and using ACCP, see the [amazon-corretto-crypto-provider repository](https://github.com/corretto/amazon-corretto-crypto-provider).