fix aws ecs script with new folder structure

setup-aws-ecs.sh

@@ -4,10 +4,10 @@
 ecs-cli configure --region us-east-1 --cluster foodtrucks
 
 # setup cloud formation template
-ecs-cli up --keypair ecs --capability-iam --size 2 --instance-type t2.micro
+ecs-cli up --keypair ecs --capability-iam --size 1 --instance-type t2.medium
 
 # deploy
-ecs-cli compose --file aws-compose.yml up
+cd aws-ecs && ecs-cli compose --file aws-compose.yml up
 
 # check
 ecs-cli ps