Sentimentalist

To deploy lambda

1. Run sbt assembly
2. Create new lambda function in AWS console
3. In console, upload target/scala-2.12/sentimentalist-assembly-0.1.0-SNAPSHOT.jar to new lambda
4. In console, set 'Handler' field to sentimentalist.lambda.BatchSentimentAnalystLambda::handle

The execution role of the lambda will need access to the Comprehend and S3 services.