Merge pull request #10 from SteveDiamond/master

New hello world

Author: PTNobel

exercises/hello_world.ipynb

@@ -1,14 +1,25 @@
 {
  "cells": [
   {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Hello, world! (1)\n",
+    "\n",
+    "[Install CVXPY](https://www.cvxpy.org/install/index.html) and run the code on the [CVXPY landing page](https://www.cvxpy.org/)."
+   ]
+  },
+  {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {
     "pycharm": {
      "name": "#%% md\n"
     }
    },
    "source": [
-    "# Hello, world!\n",
+    "# Hello, world! (2)\n",
     "\n",
     "Solve the following optimization problem using CVXPY:\n",
     "\n",