add note to readme that reagion should match aws cli config + adjust makefile to use exported reagion

Author: tinyg210

Makefile

@@ -15,7 +15,7 @@ install:
 
 deploy:
 	test -e node_modules || yarn; \
-	cdklocal bootstrap aws://000000000000/us-east-1; \
+	cdklocal bootstrap aws://000000000000/$$AWS_DEFAULT_REGION; \
 	cdklocal deploy
 
 ## Start LocalStack in detached mode

README.md

@@ -57,6 +57,9 @@ cdklocal bootstrap aws://000000000000/us-east-1
 cdklocal deploy
 ```
 
+*Note: Make sure your region is set to `us-east-1` in your AWS CLI configuration. Alternatively you can adjust the bootstrap command to match your region.
+The region in the Makefile is also set to `us-eat-1` and might need changing.*
+
 As an output of the last command, you will see the API Gateway endpoint URL. You can use this URL to test the API.
 
 ### Testing the microservice