message: Add a note about binding multiple keys
  * Add a note about Binding multiple keys
  From discussion in
  * Update doc/user-docs/UsingJsonSettings.md
  * update the comment here to be a little clearer
diff: @@ -107,6 +107,22 @@ add the following to your keybindings:
  This will _unbind_ <kbd>Ctrl+Shift+6</kbd>, allowing vim to use the keystroke
  instead of the terminal.
  +### Binding multiple keys
  +
  +You can have multiple key chords bound to the same action. To do this, simply
  +add multiple bindings for the same action. For example:
  +
  +```json
  + "keybindings" :
  + [
  + { "command": "copy", "keys": "ctrl+shift+c" },
  + { "command": "copy", "keys": "ctrl+c" },
  + { "command": "copy", "keys": "enter" }
  + ]
  +```
  +
  +In this snippet, all three of <kbd>ctrl+shift+c</kbd>, <kbd>ctrl+c</kbd> and <kbd>enter</kbd> are bound to `copy`.
  +
  ## Profiles
  A profile contains the settings applied when a new WT tab is opened. Each
  