Add info on creating token.

Author: yakutovicha

10_manage_python_project.ipynb

@@ -135,9 +135,12 @@
     "## Preparatory exercise\n",
     "\n",
     "1. Decide which package you want to use for the following exercises, yours or the [mypackage](https://github.com/empa-scientific-it/mypackage).\n",
-    "2. If you use the `mypackage` fork it to your own GitHub account by clicking on the `Fork` button in the top right corner.\n",
-    "3. Clone the fork to your local machine: `git clone <url-to-your-repository>`.\n",
+    "1. If you use the `mypackage` fork it to your own GitHub account by clicking on the `Fork` button in the top right corner.\n",
+    "1. Clone the fork to your local machine: `git clone <url-to-your-repository>`.\n",
     "   The URL can be found by clicking on the `<Code>` dropdown and selecting __HTTPS__ tab.\n",
+    "1. [Create an access token](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token#creating-a-personal-access-token-classic) for your account that will be used instead of your password.\n",
+    "   You should enable `workflow`, `write:packages`, `delete:packages`.\n",
+    "   Make sure to store the token in some secure location.\n",
     "\n",
     "<div class=\"alert alert-block alert-info\">\n",
     "In the following, we will always assume that <code>mypackage</code> is the package you are working on (either yours or the one you have forked).\n",