Added a heading and intro

Author: HeidiSteen

Quickstart/azure-search-quickstart.ipynb

@@ -4,7 +4,17 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "In the first cell, load the libraries used for working with JSON and formulating HTTP requests."
+    "# Create a search index using REST APIs and Python"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "This Jupyter Notebook demonstrates index creation, data ingestion, and queries of an Azure Cognitive Search index by calling the REST APIs from Python code. This notebook is a companion document to this [Python quickstart](https://docs.microsoft.com/azure/search/search-get-started-python). \n",
+    "\n",
+    "\n",
+    "As a first step, load the libraries used for working with JSON and formulating HTTP requests."
    ]
   },
   {
@@ -294,7 +304,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "By default, the search engine returns the top 50 documents but you can use $top and $skip to add pagination and choose how many documents in each result. This query returns two documents in each result set."
+    "By default, the search engine returns the top 50 documents but you can use top and skip to add pagination and choose how many documents in each result. This query returns two documents in each result set."
    ]
   },
   {