Add references section to ep3

Author: abraham.asfaw

Coding_With_Qiskit/ep3_Hello_World.ipynb

@@ -39,7 +39,7 @@
        "        "
       ],
       "text/plain": [
-       "<IPython.lib.display.IFrame at 0x111f51320>"
+       "<IPython.lib.display.IFrame at 0x109c62eb8>"
       ]
      },
      "execution_count": 1,
@@ -488,6 +488,22 @@
     "%qiskit_disable_job_watcher"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# References"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "For detailed information about Qiskit, check out the tutorials in the Github repository:\n",
+    "\n",
+    "https://github.com/Qiskit/qiskit-iqx-tutorials"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -548,13 +564,6 @@
    "source": [
     "%qiskit_copyright"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {