S3 bucket creation instructions slightly confusing

[oudeismetis]

Minor bit of confusion

The instructions say:

But in reality you need to call it like this:

tn aws-make-s3-bucket bucket-name thinknimble

Calling it with profile='thinknimble' results in a call like this:

... --capabilities CAPABILITY_NAMED_IAM --profile=profile=thinknimble

[whusterj]

I agree this is confusing... I like just's approach, but its command documentation and tab completion functionality are rough. I think this is auto-generated by just, but I'll see if there's anything we can do to make it clearer.