Added Open in Colab button to notebook. (#1567)

Web_based_UI_for_Stable_Diffusion_colab.ipynb

@@ -7,7 +7,6 @@
       "provenance": [],
       "collapsed_sections": [
         "5-Bx4AsEoPU-",
-        "WcZH9VE6JOCd",
         "xMWVQOg0G1Pj"
       ]
     },
@@ -21,6 +20,15 @@
     "accelerator": "GPU"
   },
   "cells": [
+    {
+      "cell_type": "markdown",
+      "source": [
+        "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/sd-webui/stable-diffusion-webui/blob/dev/Web_based_UI_for_Stable_Diffusion_colab.ipynb)"
+      ],
+      "metadata": {
+        "id": "S5RoIM-5IPZJ"
+      }
+    },
     {
       "cell_type": "markdown",
       "source": [
@@ -266,7 +274,8 @@
     {
       "cell_type": "code",
       "metadata": {
-        "id": "yKFE49BHaWTb"
+        "id": "yKFE49BHaWTb",
+        "cellView": "form"
       },
       "source": [
         "#@title <-- Press play on the music player to keep the tab alive, then you can continue with everything below (Uses only 13MB of data)\n",