Update GitHub Classroom link in assignment.

Author: lapets

README.md

@@ -32,7 +32,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Please use the following invitation link to create your assignment repository for this assignment: [https://classroom.github.com/???](https://classroom.github.com/???). Include your BU username within your submission by adding it here: **<BU username&gt;**.\n",
+    "Please use the following invitation link to create your assignment repository for this assignment: [https://classroom.github.com/a/3Af24wlA](https://classroom.github.com/a/3Af24wlA). Include your BU username within your submission by adding it here: **<BU username&gt;**.\n",
     "\n",
     "Do not delete the output of your code cells. This assignment must be completed **individually** by each student."
    ]
@@ -53,7 +53,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [
     {
@@ -144,7 +144,7 @@
        "4   59   95000             0       0            1        0"
       ]
      },
-     "execution_count": 2,
+     "execution_count": 3,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -244,13 +244,6 @@
    "metadata": {},
    "outputs": [],
    "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "----------"
-   ]
   }
  ],
  "metadata": {