feat(Colab): set up notebook for Colab demo

closes #4

docs/src/pages/index.js

@@ -23,6 +23,14 @@ function HomepageHeader() {
             Tutorial - 5min ⏱️
           </Link>
         </div>
+        <br />
+        <div className={styles.buttons}>
+          <Link
+            className="button button--secondary button--lg"
+            to="https://colab.research.google.com/github/f-aguzzi/tesi/blob/main/src/notebook.ipynb">
+            Try it on Colab 🔗
+          </Link>
+        </div>
       </div>
     </header>
   );

src/notebook.ipynb

@@ -8,6 +8,24 @@
     "\n",
     "This simple Jupyter Notebook will exemplify a simple workflow using this library, starting from data fusion and ending with prediction.\n",
     "\n",
+    "## Step zero (Colab only): download the repository\n",
+    "Skip this step if you're working with Jupyter Notebook locally on your computer. Run it if you're trying this script from the Colab demo."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "!git clone https://github.com/f-aguzzi/tesi.git\n",
+    "%cd tesi/src"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
     "## First step: Low-Level Data Fusion\n",
     "- the `LLDF` class is used for data fusion\n",
     "- the `LLDF_Settings` class is a helper class for setting up `LLDF`\n",