added creating_arrays_in_dataframes

Author: mahmoudparsian

code/bonus_chapters/README.md

@@ -15,6 +15,7 @@ so I added the following bonus chapters online.
 | [Correlation](./correlation/)               | All vs. All Correlation |
 | [`mapPartitions()` Transformation](./mappartitions/) | `mapPartitions()` Complete Example  |
 | [`UDF`](./UDF/) | User-Defined Function Example  |
+| [`DataFrames`](./dataframes/) | Examples on Creation and Transformation of DataFrames |
 
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@@ -24,4 +25,4 @@ so I added the following bonus chapters online.
         alt="Data Algorithms with Spark"
         src="../../images/Data_Algorithms_with_Spark_COVER_9781492082385.png"
     >
->
+>