clean up console.log()s in dom.js

[rachaelcodes]

It's good that you've checked your code with console.log (where it can't be tested in tape), but don't forget to remove them from your production code - your user shouldn't be reading stuff in their console.

[rachaelcodes]

On a similar note, it's best practice not to have commented code in what you're sharing - your code should be readable just as it is. I realise this is a learning project though, so it might be something to work towards in future weeks (or maybe you could have a separate 'notes' branch with the comments in?).