clarify messages in CLI functions in the event of user cancelation
fix the strange case of canceled config writing
Reduce template upload size.
Only cfn-config writes config file. Fixes #31.
Remove filepath arg.
Merge branch 'master' of github.com:mapbox/cfn-config into cli-messages

Conflicts:
	bin/config.js
	index.js
Merge pull request #29 from mapbox/cli-messages

Cli messages
Cleanup JSON file loading.
Add support for s3:// urls. Fixes #33.
Merge pull request #35 from mapbox/s3-files

S3 file loading
merge master; upload to bucket scoped to your account ID and region
get user arn from error messages
merge upstream changes