Spacing

These are minor matters, but wanted to share them.

The standard in Ruby is to use two spaces to indent.  The reason can be found in Eloquent Ruby. :smile: Tabs are a no-no.

It might seem like a minor point, but properly-indented code makes it look like the author **cares**.  Not that you don't care, because you I know you do... it's just like getting your car back from the garage and they took the care to wash it. It's that final polish that makes people feel better about everything else. :smiley: