title: How to add/edit code snippets in jupyer notebook?
body: <p>I tried to follow the instructions given in the README file of the extension.
  Im using Windows and to open my notebooks I use the jupyter-notebook.exe stored in the directory </p>
  
  <blockquote>
    <p>..\Anaconda3\Scripts</p>
  </blockquote>
  
  <p>Within the Anaconda3 directory I go to the subdirectory</p>
  
  <blockquote>
    <p>Anaconda3\Lib\site-packages\jupyter_contrib_nbextensions\nbextensions\snippets</p>
  </blockquote>
  
  <p>and there change the code of the file "snippets.json" from</p>
  
  <pre><code>{
  "snippets" : [
      {
          "name" : "example",
          "code" : [
              "# This is an example snippet!",
              "# To create your own, add a new snippet block to the",
              "# snippets.json file in your jupyter data directory under nbextensions:",
              "# $(jupyter --data-dir)/nbextensions/snippets/snippets.json",
              "import this"
          ]
      }
  ]
  }
  </code></pre>
  
  <p>to</p>
  
  <pre><code>{
      "snippets" : [
          {
              "name" : "example",
              "code" : [
                  "# This is a test if something changed",
              ]
      ]
  }
  </code></pre>
  
  <p>Then I restart my notebook and insert the example snippet. But my changes weren't adopted, I still get the original example snipped.</p>
  
  <p>What I am doing wrong?</p>