Document configuration variables in deploy.sh (#97)

Author: eneko

Examples/LambdaFunctions/README.md

@@ -20,7 +20,11 @@ Steps to deploy this sample to AWS Lambda using the AWS CLI:
   ./scripts/deploy.sh
   ```
 
-  Note: This script assumes you have AWS CLI installed and credentials setup in `~/.aws/credentials`.
+  Notes: 
+  - This script assumes you have AWS CLI installed and credentials setup in `~/.aws/credentials`.
+  - The default lambda function name is `SwiftSample`. You can specify a different one updating `lambda_name` in `deploy.sh`
+  - Update `s3_bucket=swift-lambda-test` in `deploy.sh` before running (AWS S3 buckets require a unique global name)
+  - Both lambda function and S3 bucket must exist before deploying for the first time.
 
 ### Deployment instructions using AWS SAM (Serverless Application Model)
 

Examples/LambdaFunctions/scripts/deploy.sh

@@ -15,8 +15,12 @@
 
 set -eu
 
+# Lambda Function name (must exist in AWS Lambda)
 lambda_name=SwiftSample
+
+# S3 bucket name to upload zip file (must exist in AWS S3)
 s3_bucket=swift-lambda-test
+
 executables=( $(swift package dump-package | sed -e 's|: null|: ""|g' | jq '.products[] | (select(.type.executable)) | .name' | sed -e 's|"||g') )
 
 if [[ ${#executables[@]} = 0 ]]; then