Add binder links to slide notebooks.

Author: stefmolin

slides/1-getting_started_with_pandas.ipynb

@@ -10,7 +10,7 @@
     "tags": []
    },
    "source": [
-    "[![View slides in browser](https://img.shields.io/badge/view-slides-orange?logo=reveal.js&logoColor=white)](https://stefmolin.github.io/pandas-workshop/slides/html/workshop.slides.html#/section-1)\n",
+    "[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/stefmolin/pandas-workshop/main?urlpath=lab/tree/slides/1-getting_started_with_pandas.ipynb) [![View slides in browser](https://img.shields.io/badge/view-slides-orange?logo=reveal.js&logoColor=white)](https://stefmolin.github.io/pandas-workshop/slides/html/workshop.slides.html#/section-1)\n",
     "\n",
     "---\n",
     "\n"

slides/2-data_wrangling.ipynb

@@ -10,7 +10,7 @@
     "tags": []
    },
    "source": [
-    "[![View slides in browser](https://img.shields.io/badge/view-slides-orange?logo=reveal.js&logoColor=white)](https://stefmolin.github.io/pandas-workshop/slides/html/workshop.slides.html#/section-2)\n",
+    "[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/stefmolin/pandas-workshop/main?urlpath=lab/tree/slides/2-data_wrangling.ipynb) [![View slides in browser](https://img.shields.io/badge/view-slides-orange?logo=reveal.js&logoColor=white)](https://stefmolin.github.io/pandas-workshop/slides/html/workshop.slides.html#/section-2)\n",
     "\n",
     "---\n",
     "\n"

slides/3-data_visualization.ipynb

@@ -10,7 +10,7 @@
     "tags": []
    },
    "source": [
-    "[![View slides in browser](https://img.shields.io/badge/view-slides-orange?logo=reveal.js&logoColor=white)](https://stefmolin.github.io/pandas-workshop/slides/html/workshop.slides.html#/section-3)\n",
+    "[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/stefmolin/pandas-workshop/main?urlpath=lab/tree/slides/3-data_visualization.ipynb) [![View slides in browser](https://img.shields.io/badge/view-slides-orange?logo=reveal.js&logoColor=white)](https://stefmolin.github.io/pandas-workshop/slides/html/workshop.slides.html#/section-3)\n",
     "\n",
     "---\n",
     "\n",