Make s3 bucket variable work

bonus: instruction not to include s3:// in the bucket name

cookiecutter.json

@@ -3,5 +3,5 @@
     "repo_name": "{{ cookiecutter.project_name|replace(' ', '_') }}",
     "author_name": "Your name (or your organization/company/team)",
     "description": "A short description of the project.",
-    "s3_bucket": "your-bucket-for-syncing-data"
+    "s3_bucket": "your-bucket-for-syncing-data (do not include 's3://')"
 }

{{ cookiecutter.repo_name }}/Makefile

@@ -23,10 +23,10 @@ lint:
 	flake8 .
 
 sync_data_to_s3:
-	s3cmd sync --recursive data/ s3://$( BUCKET )/data/
+	s3cmd sync --recursive data/ s3://$(BUCKET)/data/
 
 sync_data_from_s3:
-	s3cmd sync --recursive s3://$( BUCKET )/data/ data/
+	s3cmd sync --recursive s3://$(BUCKET)/data/ data/
 
 #################################################################################
 # PROJECT RULES                                                                 #