Added Installation guide for Gitlab Pages

doc/usage.ipynb

@@ -692,6 +692,37 @@
     "</div>"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Automatic Creation of HTML and PDF output on GitLab Pages\n",
+    "\n",
+    "When using GitLab pages, you can use nbsphinx by adding the file `.gitlab-ci.yml` to your repo and copy the following code into this file:\n",
+    "```\n",
+    "image: python\n",
+    "\n",
+    "before_script:\n",
+    "  - apt-get update -y\n",
+    "  - apt-get install -y pandoc\n",
+    "\n",
+    "\n",
+    "pages:\n",
+    "  stage: deploy\n",
+    "  script:\n",
+    "    - pip install numpy ipykernel\n",
+    "    - pip install sphinx nbsphinx \n",
+    "    - mkdir -p doc; cd doc\n",
+    "    - sphinx-build -b html source ../public/\n",
+    "    - echo 'Done'\n",
+    "  artifacts:\n",
+    "    paths:\n",
+    "      - public\n",
+    "  only:\n",
+    "    - master\n",
+    "```"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -876,7 +907,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3",```
    "language": "python",
    "name": "python3"
   },