message: update readme for remapping vim command line commands
diff: @@ -47,6 +47,15 @@ Below is an example of a [settings.json](https://code.visualstudio.com/Docs/cust
  {
  "before": ["<leader>","d"],
  "after": ["d", "d"]
  + },
  + {
  + "before":["<C-n>"],
  + "after":[],
  + "commands": [
  + {
  + "command": ":nohl"
  + }
  + ]
  }
  ],
  "vim.leader": "<space>",
  @@ -139,10 +148,20 @@ Bind `ZZ` to save and close the current file:
  ]
  ````
  -Or bind `<leader>w` to save the current file:
  +Or bind ctrl+n to turn off search highlighting and `<leader>w` to save the current file:
  ```
  "vim.otherModesKeyBindingsNonRecursive": [
  + {
  + "before":["<C-n>"],
  + "after":[],
  + "commands": [
  + {
  + "command": ":nohl",
  + "args": []
  + }
  + ]
  + },
  {
  "before": ["leader", "w"],
  "after": [],
  