Update aws-cs-lambda README (pulumi#837)

aws-cs-lambda/README.md

@@ -1,9 +1,9 @@
 # AWS C# Lambda
-This example creates a lambda that does a simple `.toUpper` on the string input and returns it. 
+This example creates an AWS Lambda function that does a simple `.toUpper` on the string input and returns it. 
 
 ## Deploying the App
 
-To deploy your infrastructure, follow the below steps.
+To deploy your infrastructure, follow the steps below.
 
 ### Prerequisites
 
@@ -16,23 +16,35 @@ After cloning this repo, from this working directory, run these commands:
 
 1. Build and publish the lambda function, making the output available to our Pulumi program. 
 
-```bash
-dotnet publish ./DotnetLambda/src/DotnetLambda/
-```
+ ```bash
+ dotnet publish ./DotnetLambda/src/DotnetLambda/
+ ```
 
 2. Execute our Pulumi program to archive our published function output, and create our lambda. 
-```bash
-pulumi up -C ./pulumi
-```
-
-3. Call our lambda function from the aws cli.
-```bash
-aws lambda invoke \
---function-name $(pulumi stack output Lambda -C ./pulumi) \
---region $(pulumi config get aws:region -C ./pulumi) \
---payload '"foo"' \
-output.json
-
-cat output.json # view the output file with your tool of choice
-# "FOO"
-```
+
+ ```bash
+ pulumi up -C ./pulumi
+ ```
+
+3. Call our Lambda function from the AWS CLI with "foo" as the payload.
+
+ ```bash
+ aws lambda invoke \
+ --function-name $(pulumi stack output Lambda -C ./pulumi) \
+ --region $(pulumi config get aws:region -C ./pulumi) \
+ --cli-binary-format raw-in-base64-out \
+ --payload '"foo"' \
+ output.json
+
+ cat output.json # view the output file with your tool of choice
+ # "FOO"
+ ```
+
+6. From there, feel free to experiment. Simply making edits, rebuilding your handler, and running `pulumi up` will update your function.
+
+7. Afterwards, destroy your stack and remove it:
+
+ ```bash
+ pulumi destroy --yes
+ pulumi stack rm --yes
+ ```