Check off adding pathogen installation instructions.

Provide basic instructions. I'm only familiar with pathogen, so that's
what the example uses. You're free to use Vundle, NeoBundle, etc. if you
prefer.

Previously my custom `d` and `dd` operators wouldn't save their
deletions to the unnamed register. For normal custom operators this is
exactly what you want, but not when you're making your own delete
operator.

When you notice this it becomes _extremely_ annoying. Fixing it here so
now deleted text goes into the unnamed register.

Check off new sound file updating.

Cantina sound files are now in the Resources/Songs/ directory.

Use the new C# scale files in insert mode for a wider range of notes.

Add a few new TODOs from earlier this week.

Move Cantina to songs

Delete old notes