message: Add a note regarding unbinding keys
diff: @@ -72,6 +72,24 @@ For example, here's a sample of the default keybindings:
  ```
  +### Unbinding keys
  +
  +If you ever come across a key binding that you're unhappy with, it's possible to
  +easily change the keybindings. For example, vim uses <kbd>Ctrl+^</kbd> as a
  +binding for "switch to previous buffer", which conflicts with the Terminal's
  +default keybinding for "open a new tab with the sixth profile". If you'd like to
  +unbind that keybinding, and allow the keystroke to fall through to vim, you can
  +add the following to your keybindings:
  +
  +```json
  +{
  + "command" : null, "keys" : ["ctrl+shift+6"]
  +},
  +```
  +
  +This will _unbind_ <kbd>Ctrl+Shift+6</kbd>, allowing vim to use the keystroke
  +instead of the terminal.
  +
  ## Profiles
  A profile contains the settings applied when a new WT tab is opened. Each
  