title: serverless: deploy lambda with code from S3
body: <p>I have aws codebuild hooked up to my git repo keeping my lambda function code up to date with each merge, I'd like to automate the process of refreshing the code in my lambdas using serverless.</p>
  
  <p>Right now I use serverless to create my DBs &amp; S3 buckets, but I'd like to be able to deploy my lambdas and attribute the function code to a specific zip file in an S3 bucket as well -- is this possible? If so, what would the lambda's serverless yml look like?</p>
  
  <p>Cheers,
  -E</p>