Add run colab

Makefile

@@ -15,4 +15,7 @@ git-rm-merged:
 docs:
 	jb build docs
 
+clean:
+	nbstripout --drop-empty-cells notebooks/*.ipynb
+
 .PHONY: docs

README.md

@@ -1,5 +1,9 @@
 # PIC training
 
+You can [![Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/gdsfactory/gdsfactory-photonics-training)
+
+Or Install gdsfactory locally on your computer.
+
 ## 1. Install Python
 
 - [ ] Make sure you have python 3.10 or 3.11 installed on your computer. Here is the [anaconda](https://www.anaconda.com/download/) installer.

notebooks/10_layout.ipynb

@@ -5,7 +5,7 @@
    "id": "30a37197",
    "metadata": {},
    "source": [
-    "# Component\n",
+    "# Layout tutorial (short)\n",
     "\n",
     "A `Component` is like an empty canvas, where you can add polygons, references to other Components and ports (to connect to other components)\n",
     "\n",
@@ -14,6 +14,22 @@
     "In gdsfactory **all dimensions** are in **microns**"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b066ee6c",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "try:\n",
+    "  import google.colab\n",
+    "  is_running_on_colab = True\n",
+    "  !pip install gdsfactory klayout > /dev/null\n",
+    "  \n",
+    "except ImportError:\n",
+    "  is_running_on_colab = False"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "2bc35b51",
@@ -35,6 +51,7 @@
     "from gdsfactory.generic_tech import get_generic_pdk\n",
     "\n",
     "gf.config.rich_output()\n",
+    "gf.CONF.display_type = 'klayout'\n",
     "\n",
     "PDK = get_generic_pdk()\n",
     "PDK.activate()\n",