Update readme

README.md

@@ -13,6 +13,10 @@
 
 ## Usage
 
- * Create a new Jupyter notebook: `jupyter-notebook`
- * Change the kernel to `C`
+ * Open the example notebook: `jupyter-notebook example-notebook.ipynb`
  * Enjoy!
+
+## Example of notebook
+
+![Example of notebook](example-notebook.png?raw=true "Example of notebook")
+

example-notebook.ipynb

@@ -136,15 +136,6 @@
    "source": [
     "You can see that the errors and warnings are shown, but the code is not executed. The retcode is also added to the end of `stderr`"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {